@article{Vischi2024,

title = {Simulating photonic devices with noisy optical elements},

author = {Michele Vischi and Giovanni Di Bartolomeo and Massimiliano Proietti and Seid Koudia and Filippo Cerocchi and Massimiliano Dispenza and Angelo Bassi},

doi = {10.1103/physrevresearch.6.033337},

issn = {2643-1564},

year  = {2024},

date = {2024-09-00},

journal = {Phys. Rev. Research},

volume = {6},

number = {3},

publisher = {American Physical Society (APS)},

abstract = {Quantum computers are inherently affected by noise. While in the long term, error correction codes will account for noise at the cost of increasing physical qubits, in the near term, the performance of any quantum algorithm should be tested and simulated in the presence of noise. As noise acts on the hardware, the classical simulation of a quantum algorithm should not be agnostic on the platform used for the computation. In this paper, we apply the recently proposed noisy gates approach to efficiently simulate noisy optical circuits described in the dual rail framework. The evolution of the state vector is simulated directly, without requiring the mapping to the density matrix framework. Notably, we test the method on both the gate-based and measurement-based quantum computing models, showing that the approach is very versatile. We also evaluate the performance of a photonic variational quantum algorithm to solve the MAX-2-CUT problem. In particular we design and simulate an ansatz, which is resilient to photon losses up to p∼10−3 making it relevant for near-term applications.

          

            

            

              

                Published by the American Physical Society

                2024

              

            

          },

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Altamura2024,

title = {Noninterferometric rotational test of the continuous spontaneous localization model: Enhancement of the collapse noise through shape optimization},

author = {Davide Giordano Ario Altamura and Matteo Carlesso and Sandro Donadi and Angelo Bassi},

doi = {10.1103/physreva.109.062212},

issn = {2469-9934},

year  = {2024},

date = {2024-06-00},

journal = {Phys. Rev. A},

volume = {109},

number = {6},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Piscicchia2024,

title = {X-Ray Emission from Atomic Systems Can Distinguish between Prevailing Dynamical Wave-Function Collapse Models},

author = {Kristian Piscicchia and Sandro Donadi and Simone Manti and Angelo Bassi and Maaneli Derakhshani and Lajos Diósi and Catalina Curceanu},

doi = {10.1103/physrevlett.132.250203},

issn = {1079-7114},

year  = {2024},

date = {2024-06-00},

journal = {Phys. Rev. Lett.},

volume = {132},

number = {25},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Figurato2024,

title = {On the testability of the Károlyházy model},

author = {Laria Figurato and Angelo Bassi and Sandro Donadi},

doi = {10.1088/1367-2630/ad1499},

issn = {1367-2630},

year  = {2024},

date = {2024-01-01},

journal = {New J. Phys.},

volume = {26},

number = {1},

publisher = {IOP Publishing},

abstract = {Abstract

               Károlyházy’s original proposal, suggesting that space-time fluctuations could be a source of decoherence in space, faced a significant challenge due to an unexpectedly high emission of radiation (13 orders of magnitude more than what was observed in the latest experiment). To address this issue, we reevaluated Károlyházy’s assumption that the stochastic metric fluctuation must adhere to a wave equation. By considering more general correlation functions of space-time fluctuations, we resolve the problem and consequently revive the aforementioned proposal.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{DiBartolomeo2023b,

title = {Noisy gates for simulating quantum computers},

author = {Giovanni Di Bartolomeo and Michele Vischi and Francesco Cesa and Roman Wixinger and Michele Grossi and Sandro Donadi and Angelo Bassi},

doi = {10.1103/physrevresearch.5.043210},

issn = {2643-1564},

year  = {2023},

date = {2023-12-00},

journal = {Phys. Rev. Research},

volume = {5},

number = {4},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Donadi2023,

title = {Collapse Dynamics Are Diffusive},

author = {Sandro Donadi and Luca Ferialdi and Angelo Bassi},

doi = {10.1103/physrevlett.130.230202},

issn = {1079-7114},

year  = {2023},

date = {2023-06-00},

journal = {Phys. Rev. Lett.},

volume = {130},

number = {23},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gundhi2023,

title = {Motion of an electron through vacuum fluctuations},

author = {Anirudh Gundhi and Angelo Bassi},

doi = {10.1103/physreva.107.062801},

issn = {2469-9934},

year  = {2023},

date = {2023-06-00},

journal = {Phys. Rev. A},

volume = {107},

number = {6},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Bassi2023,

title = {Collapse Models: A Theoretical, Experimental and Philosophical Review},

author = {Angelo Bassi and Mauro Dorato and Hendrik Ulbricht},

doi = {10.3390/e25040645},

issn = {1099-4300},

year  = {2023},

date = {2023-04-00},

journal = {Entropy},

volume = {25},

number = {4},

publisher = {MDPI AG},

abstract = {In this paper, we review and connect the three essential conditions needed by the collapse model to achieve a complete and exact formulation, namely the theoretical, the experimental, and the ontological ones. These features correspond to the three parts of the paper. In any empirical science, the first two features are obviously connected but, as is well known, among the different formulations and interpretations of non-relativistic quantum mechanics, only collapse models, as the paper well illustrates with a richness of details, have experimental consequences. Finally, we show that a clarification of the ontological intimations of collapse models is needed for at least three reasons: (1) to respond to the indispensable task of answering the question ’what are collapse models (and in general any physical theory) about?’; (2) to achieve a deeper understanding of their different formulations; (3) to enlarge the panorama of possible readings of a theory, which historically has often played a fundamental heuristic role.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Napolitano2023,

title = {Underground Tests of Quantum Mechanics by the VIP Collaboration at Gran Sasso},

author = {Fabrizio Napolitano and Andrea Addazi and Angelo Bassi and Massimiliano Bazzi and Mario Bragadireanu and Michael Cargnelli and Alberto Clozza and Luca De Paolis and Raffaele Del Grande and Maaneli Derakhshani and Sandro Donadi and Carlo Fiorini and Carlo Guaraldo and Mihail Iliescu and Matthias Laubenstein and Simone Manti and Antonino Marcianò and Johann Marton and Marco Miliucci and Edoardo Milotti and Kristian Piscicchia and Alessio Porcelli and Alessandro Scordo and Francesco Sgaramella and Diana Laura Sirghi and Florin Sirghi and Oton Vazquez Doce and Johann Zmeskal and Catalina Curceanu},

doi = {10.3390/sym15020480},

issn = {2073-8994},

year  = {2023},

date = {2023-02-00},

journal = {Symmetry},

volume = {15},

number = {2},

publisher = {MDPI AG},

abstract = {Modern physics lays its foundations on the pillars of Quantum Mechanics (QM), which has been proven successful to describe the microscopic world of atoms and particles, leading to the construction of the Standard Model. Despite the big success, the old open questions at its very heart, such as the measurement problem and the wave function collapse, are still open. Various theories consider scenarios which could encompass a departure from the predictions of the standard QM, such as extra-dimensions or deformations of the Lorentz/Poincaré symmetries. At the Italian National Gran Sasso underground Laboratory LNGS, we search for evidence of new physics proceeding from models beyond standard QM, using radiation detectors. Collapse models addressing the foundations of QM, such as the gravity-related Diósi–Penrose (DP) and Continuous Spontaneous Localization (CSL) models, predict the emission of spontaneous radiation, which allows experimental tests. Using a high-purity Germanium detector, we could exclude the natural parameterless version of the DP model and put strict bounds on the CSL one. In addition, forbidden atomic transitions could prove a possible violation of the Pauli Exclusion Principle (PEP) in open and closed systems. The VIP-2 experiment is currently in operation, aiming at detecting PEP-violating signals in Copper with electrons; the VIP-3 experiment upgrade is foreseen to become operative in the next few years. We discuss the VIP-Lead experiment on closed systems, and the strong bounds it sets on classes of non-commutative quantum gravity theories, such as the θ–Poincaré theory.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ribezzo2022,

title = {Deploying an Inter‐European Quantum Network},

author = {Domenico Ribezzo and Mujtaba Zahidy and Ilaria Vagniluca and Nicola Biagi and Saverio Francesconi and Tommaso Occhipinti and Leif K. Oxenløwe and Martin Lončarić and Ivan Cvitić and Mario Stipčević and Žiga Pušavec and Rainer Kaltenbaek and Anton Ramšak and Francesco Cesa and Giorgio Giorgetti and Francesco Scazza and Angelo Bassi and Paolo De Natale and Francesco Saverio Cataliotti and Massimo Inguscio and Davide Bacco and Alessandro Zavatta},

doi = {10.1002/qute.202200061},

issn = {2511-9044},

year  = {2023},

date = {2023-02-00},

journal = {Adv Quantum Tech},

volume = {6},

number = {2},

publisher = {Wiley},

abstract = {AbstractAround 40 years have passed since the first pioneering works introduced the possibility of using quantum physics to enhance communications safety. Nowadays, quantum key distribution (QKD) exited the physics laboratories to become a mature technology, triggering the attention of States, military forces, banks, and private corporations. This work takes on the challenge of bringing QKD closer to a consumer technology: deployed optical fibers by telecommunication companies of different States have been used to realize a quantum network, the first‐ever connecting three different countries. This work also emphasizes the necessity of networks where QKD can come up besides classical communications, whose coexistence currently represents the main limitation of this technology. This network connects Trieste to Rijeka and Ljubljana via a trusted node in Postojna. A key rate of over 3 kbps in the shortest link and a 7‐hour‐long measurement demonstrate the system's stability and reliability. The network has been used to present the QKD at the G20 Digital Ministers' Meeting in Trieste. The experimental results, together with the interest that one of the most important events of international politics has attracted, showcase the maturity of the QKD technology bundle, placing it in the spotlight for consumer applications in the near term.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Piscicchia2023,

title = {A Novel Approach to Parameter Determination of the Continuous Spontaneous Localization Collapse Model},

author = {Kristian Piscicchia and Alessio Porcelli and Angelo Bassi and Massimiliano Bazzi and Mario Bragadireanu and Michael Cargnelli and Alberto Clozza and Luca De Paolis and Raffaele Del Grande and Maaneli Derakhshani and Diósi Lajos and Sandro Donadi and Carlo Guaraldo and Mihai Iliescu and Matthias Laubenstein and Simone Manti and Johann Marton and Marco Miliucci and Fabrizio Napolitano and Alessandro Scordo and Francesco Sgaramella and Diana Laura Sirghi and Florin Sirghi and Oton Vazquez Doce and Johann Zmeskal and Catalina Curceanu},

doi = {10.3390/e25020295},

issn = {1099-4300},

year  = {2023},

date = {2023-02-00},

journal = {Entropy},

volume = {25},

number = {2},

publisher = {MDPI AG},

abstract = {Models of dynamical wave function collapse consistently describe the breakdown of the quantum superposition with the growing mass of the system by introducing non-linear and stochastic modifications to the standard Schrödinger dynamics. Among them, Continuous Spontaneous Localization (CSL) was extensively investigated both theoretically and experimentally. Measurable consequences of the collapse phenomenon depend on different combinations of the phenomenological parameters of the model—the strength λ and the correlation length rC—and have led, so far, to the exclusion of regions of the admissible (λ−rC) parameters space. We developed a novel approach to disentangle the λ and rC probability density functions, which discloses a more profound statistical insight.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Kaltenbaek2023,

title = {Research campaign: Macroscopic quantum resonators (MAQRO)},

author = {Rainer Kaltenbaek and Markus Arndt and Markus Aspelmeyer and Peter F Barker and Angelo Bassi and James Bateman and Alessio Belenchia and Joel Bergé and Claus Braxmaier and Sougato Bose and Bruno Christophe and Garrett D Cole and Catalina Curceanu and Animesh Datta and Maxime Debiossac and Uroš Delić and Lajos Diósi and Andrew A Geraci and Stefan Gerlich and Christine Guerlin and Gerald Hechenblaikner and Antoine Heidmann and Sven Herrmann and Klaus Hornberger and Ulrich Johann and Nikolai Kiesel and Claus Lämmerzahl and Thomas W LeBrun and Gerard J Milburn and James Millen and Makan Mohageg and David C Moore and Gavin W Morley and Stefan Nimmrichter and Lukas Novotny and Daniel K L Oi and Mauro Paternostro and C Jess Riedel and Manuel Rodrigues and Loïc Rondin and Albert Roura and Wolfgang P Schleich and Thilo Schuldt and Benjamin A Stickler and Hendrik Ulbricht and Christian Vogt and Lisa Wörner},

doi = {10.1088/2058-9565/aca3cd},

issn = {2058-9565},

year  = {2023},

date = {2023-01-01},

journal = {Quantum Sci. Technol.},

volume = {8},

number = {1},

publisher = {IOP Publishing},

abstract = {Abstract

               The objective of the proposed macroscopic quantum resonators (MAQRO) mission is to harness space for achieving long free-fall times, extreme vacuum, nano-gravity, and cryogenic temperatures to test the foundations of physics in macroscopic quantum experiments at the interface with gravity. Developing the necessary technologies, achieving the required sensitivities and providing the necessary isolation of macroscopic quantum systems from their environment will lay the path for developing novel quantum sensors. Earlier studies showed that the proposal is feasible but that several critical challenges remain, and key technologies need to be developed. Recent scientific and technological developments since the original proposal of MAQRO promise the potential for achieving additional science objectives. The proposed research campaign aims to advance the state of the art and to perform the first macroscopic quantum experiments in space. Experiments on the ground, in micro-gravity, and in space will drive the proposed research campaign during the current decade to enable the implementation of MAQRO within the subsequent decade.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Bassi2022,

title = {A way forward for fundamental physics in space},

author = {A. Bassi and L. Cacciapuoti and S. Capozziello and S. Dell’Agnello and E. Diamanti and D. Giulini and L. Iess and P. Jetzer and S. K. Joshi and A. Landragin and C. Le Poncin-Lafitte and E. Rasel and A. Roura and C. Salomon and H. Ulbricht},

doi = {10.1038/s41526-022-00229-0},

issn = {2373-8065},

year  = {2022},

date = {2022-12-00},

journal = {npj Microgravity},

volume = {8},

number = {1},

publisher = {Springer Science and Business Media LLC},

abstract = {AbstractSpace-based research can provide a major leap forward in the study of key open questions in the fundamental physics domain. They include the validity of Einstein’s Equivalence principle, the origin and the nature of dark matter and dark energy, decoherence and collapse models in quantum mechanics, and the physics of quantum many-body systems. Cold-atom sensors and quantum technologies have drastically changed the approach to precision measurements. Atomic clocks and atom interferometers as well as classical and quantum links can be used to measure tiny variations of the space-time metric, elusive accelerations, and faint forces to test our knowledge of the physical laws ruling the Universe. In space, such instruments can benefit from unique conditions that allow improving both their precision and the signal to be measured. In this paper, we discuss the scientific priorities of a space-based research program in fundamental physics.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Vischi2022,

title = {Possible limits on superconducting quantum computers from spontaneous wave-function collapse models},

author = {Michele Vischi and Luca Ferialdi and Andrea Trombettoni and Angelo Bassi},

doi = {10.1103/physrevb.106.174506},

issn = {2469-9969},

year  = {2022},

date = {2022-11-00},

journal = {Phys. Rev. B},

volume = {106},

number = {17},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Donadi2022,

title = {Seven nonstandard models coupling quantum matter and gravity},

author = {Sandro Donadi and Angelo Bassi},

doi = {10.1116/5.0089318},

issn = {2639-0213},

year  = {2022},

date = {2022-06-01},

volume = {4},

number = {2},

publisher = {American Vacuum Society},

abstract = {We review seven models which consistently couple quantum matter and (Newtonian) gravity in a nonstandard way. For each of them, we present the underlying motivations, the main equations, and, when available, a comparison with experimental data.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Alonso2022,

title = {Cold atoms in space: community workshop summary and proposed road-map},

author = {Alonso, I. and Alpigiani, C. and Altschul, B and Bassi, A.},

doi = {10.1140/epjqt/s40507-022-00147-w},

year  = {2022},

date = {2022-04-12},

urldate = {2022-04-12},

journal = {EPJ Quantum Technology},

volume = {9},

pages = {30},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Carlesso2022,

title = {Present status and future challenges of non-interferometric tests of collapse models},

author = {Matteo Carlesso and Sandro Donadi and Luca Ferialdi and Mauro Paternostro and Hendrik Ulbricht and Angelo Bassi},

doi = {10.1038/s41567-021-01489-5},

issn = {1745-2481},

year  = {2022},

date = {2022-03-00},

journal = {Nat. Phys.},

volume = {18},

number = {3},

pages = {243--250},

publisher = {Springer Science and Business Media LLC},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Belenchia2022,

title = {Quantum physics in space},

author = {Alessio Belenchia and Matteo Carlesso and Ömer Bayraktar and Daniele Dequal and Ivan Derkach and Giulio Gasbarri and Waldemar Herr and Ying Lia Li and Markus Rademacher and Jasminder Sidhu and Daniel K.L. Oi and Stephan T. Seidel and Rainer Kaltenbaek and Christoph Marquardt and Hendrik Ulbricht and Vladyslav C. Usenko and Lisa Wörner and André Xuereb and Mauro Paternostro and Angelo Bassi},

doi = {10.1016/j.physrep.2021.11.004},

issn = {0370-1573},

year  = {2022},

date = {2022-03-00},

journal = {Physics Reports},

volume = {951},

pages = {1--70},

publisher = {Elsevier BV},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gasbarri2021,

title = {Testing the foundation of quantum physics in space via Interferometric and non-interferometric experiments with mesoscopic nanoparticles},

author = {Giulio Gasbarri and Alessio Belenchia and Matteo Carlesso and Sandro Donadi and Angelo Bassi and Rainer Kaltenbaek and Mauro Paternostro and Hendrik Ulbricht},

doi = {10.1038/s42005-021-00656-7},

issn = {2399-3650},

year  = {2021},

date = {2021-12-00},

journal = {Commun Phys},

volume = {4},

number = {1},

publisher = {Springer Science and Business Media LLC},

abstract = {AbstractQuantum technologies are opening novel avenues for applied and fundamental science at an impressive pace. In this perspective article, we focus on the promises coming from the combination of quantum technologies and space science to test the very foundations of quantum physics and, possibly, new physics. In particular, we survey the field of mesoscopic superpositions of nanoparticles and the potential of interferometric and non-interferometric experiments in space for the investigation of the superposition principle of quantum mechanics and the quantum-to-classical transition. We delve into the possibilities offered by the state-of-the-art of nanoparticle physics projected in the space environment and discuss the numerous challenges, and the corresponding potential advancements, that the space environment presents. In doing this, we also offer an ab-initio estimate of the potential of space-based interferometry with some of the largest systems ever considered and show that there is room for tests of quantum mechanics at an unprecedented level of detail.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{DiBartolomeo2021,

title = {Gravity as a classical channel and its dissipative generalization},

author = {Giovanni Di Bartolomeo and Matteo Carlesso and Angelo Bassi},

doi = {10.1103/physrevd.104.104027},

issn = {2470-0029},

year  = {2021},

date = {2021-11-00},

journal = {Phys. Rev. D},

volume = {104},

number = {10},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Belenchia2021,

title = {Test quantum mechanics in space — invest US$1 billion},

author = {Alessio Belenchia and Matteo Carlesso and Sandro Donadi and Giulio Gasbarri and Hendrik Ulbricht and Angelo Bassi and Mauro Paternostro},

doi = {10.1038/d41586-021-02091-8},

issn = {1476-4687},

year  = {2021},

date = {2021-08-05},

journal = {Nature},

volume = {596},

number = {7870},

pages = {32--34},

publisher = {Springer Science and Business Media LLC},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Donadi2021,

title = {Novel CSL bounds from the noise-induced radiation emission from atoms},

author = {Sandro Donadi and Kristian Piscicchia and Raffaele Del Grande and Catalina Curceanu and Matthias Laubenstein and Angelo Bassi},

doi = {10.1140/epjc/s10052-021-09556-0},

issn = {1434-6052},

year  = {2021},

date = {2021-08-00},

journal = {Eur. Phys. J. C},

volume = {81},

number = {8},

publisher = {Springer Science and Business Media LLC},

abstract = {AbstractWe study spontaneous radiation emission from matter, as predicted by the Continuous Spontaneous Localization (CSL) collapse model. We show that, in an appropriate range of energies of the emitted radiation, the largest contribution comes from the atomic nuclei. Specifically, we show that in the energy range $$Esim 10,-,10^{5}$$

                  

                    E

                    ∼

                    10

                    

                    -

                    

                    

                      10

                      5

                    

                  

                 keV the contribution to the radiation emission from the atomic nuclei grows quadratically with the atomic number of the atom, overtaking the contribution from the electrons, which grows only linearly. This theoretical prediction is then compared with the data from a dedicated experiment performed at the extremely low background environment of the Gran Sasso underground National Laboratory, where the radiation emitted form a sample of Germanium was measured.As a result, we obtain the strongest bounds on the CSL parameters for $$r_Cle 10^{-6}$$

                  

                    

                      r

                      C

                    

                    ≤

                    

                      10

                      

                        -

                        6

                      

                    

                  

                 m, improving the previous ones by more than an order of magnitude.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gundhi2021c,

title = {Impact of Dynamical Collapse Models on Inflationary Cosmology},

author = {A. Gundhi and J. L. Gaona-Reyes and Matteo Carlesso and A. Bassi},

doi = {10.1103/physrevlett.127.091302},

issn = {1079-7114},

year  = {2021},

date = {2021-08-00},

urldate = {2021-08-00},

journal = {Phys. Rev. Lett.},

volume = {127},

number = {9},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Jones2021b,

title = {Mass-coupled relativistic spontaneous collapse models},

author = {C Jones and G Gasbarri and A Bassi},

doi = {10.1088/1751-8121/abf871},

issn = {1751-8121},

year  = {2021},

date = {2021-07-23},

journal = {J. Phys. A: Math. Theor.},

volume = {54},

number = {29},

publisher = {IOP Publishing},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Kaltenbaek2021,

title = {Quantum technologies in space},

author = {Rainer Kaltenbaek and Antonio Acin and Laszlo Bacsardi and Paolo Bianco and Philippe Bouyer and Eleni Diamanti and Christoph Marquardt and Yasser Omar and Valerio Pruneri and Ernst Rasel and Bernhard Sang and Stephan Seidel and Hendrik Ulbricht and Rupert Ursin and Paolo Villoresi and Mathias van den Bossche and Wolf von Klitzing and Hugo Zbinden and Mauro Paternostro and Angelo Bassi},

doi = {10.1007/s10686-021-09731-x},

issn = {1572-9508},

year  = {2021},

date = {2021-06-00},

journal = {Exp Astron},

volume = {51},

number = {3},

pages = {1677--1694},

publisher = {Springer Science and Business Media LLC},

abstract = {AbstractRecently, the European Commission supported by many European countries has announced large investments towards the commercialization of quantum technology (QT) to address and mitigate some of the biggest challenges facing today’s digital era – e.g. secure communication and computing power. For more than two decades the QT community has been working on the development of QTs, which promise landmark breakthroughs leading to commercialization in various areas. The ambitious goals of the QT community and expectations of EU authorities cannot be met solely by individual initiatives of single countries, and therefore, require a combined European effort of large and unprecedented dimensions comparable only to the Galileo or Copernicus programs. Strong international competition calls for a coordinated European effort towards the development of QT in and for space, including research and development of technology in the areas of communication and sensing. Here, we aim at summarizing the state of the art in the development of quantum technologies which have an impact in the field of space applications. Our goal is to outline a complete framework for the design, development, implementation, and exploitation of quantum technology in space.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Asprea2021,

title = {Gravitational decoherence: A general nonrelativistic model},

author = {L. Asprea and G. Gasbarri and A. Bassi},

doi = {10.1103/physrevd.103.104041},

issn = {2470-0029},

year  = {2021},

date = {2021-05-00},

journal = {Phys. Rev. D},

volume = {103},

number = {10},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Asprea2021b,

title = {Gravitational Decoherence and the Possibility of Its Interferometric Detection},

author = {L. Asprea and A. Bassi and H. Ulbricht and G. Gasbarri},

doi = {10.1103/physrevlett.126.200403},

issn = {1079-7114},

year  = {2021},

date = {2021-05-00},

journal = {Phys. Rev. Lett.},

volume = {126},

number = {20},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Asprea2021c,

title = {Gravitational Decoherence and the Possibility of Its Interferometric Detection},

author = {L. Asprea and A. Bassi and H. Ulbricht and G. Gasbarri},

doi = {10.1103/physrevlett.126.200403},

issn = {1079-7114},

year  = {2021},

date = {2021-05-00},

journal = {Phys. Rev. Lett.},

volume = {126},

number = {20},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Asprea2021d,

title = {Gravitational decoherence: A general nonrelativistic model},

author = {L. Asprea and G. Gasbarri and A. Bassi},

doi = {10.1103/physrevd.103.104041},

issn = {2470-0029},

year  = {2021},

date = {2021-05-00},

journal = {Phys. Rev. D},

volume = {103},

number = {10},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Rijavec2021,

title = {Decoherence effects in non-classicality tests of gravity},

author = {Simone Rijavec and Matteo Carlesso and Angelo Bassi and Vlatko Vedral and Chiara Marletto},

doi = {10.1088/1367-2630/abf3eb},

issn = {1367-2630},

year  = {2021},

date = {2021-04-01},

journal = {New J. Phys.},

volume = {23},

number = {4},

publisher = {IOP Publishing},

abstract = {Abstract

               The experimental observation of a clear quantum signature of gravity is believed to be out of the grasp of current technology. However, several recent promising proposals to test the possible existence of non-classical features of gravity seem to be accessible by the state-of-art table-top experiments. Among them, some aim at measuring the gravitationally induced entanglement between two masses which would be a distinct non-classical signature of gravity. We explicitly study, in two of these proposals, the effects of decoherence on the system’s dynamics by monitoring the corresponding degree of entanglement. We identify the required experimental conditions necessary to perform successfully the experiments. In parallel, we account also for the possible effects of the continuous spontaneous localization (CSL) model, which is the most known among the models of spontaneous wavefunction collapse. We find that any value of the parameters of the CSL model would completely hinder the generation of gravitationally induced entanglement.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Jones2021,

title = {Impossibility of extending the Ghirardi-Rimini-Weber model to relativistic particles},

author = {C. Jones and T. Guaita and A. Bassi},

doi = {10.1103/physreva.103.042216},

issn = {2469-9934},

year  = {2021},

date = {2021-04-00},

journal = {Phys. Rev. A},

volume = {103},

number = {4},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Jones2021c,

title = {Impossibility of extending the Ghirardi-Rimini-Weber model to relativistic particles},

author = {C. Jones and T. Guaita and A. Bassi},

doi = {10.1103/physreva.103.042216},

issn = {2469-9934},

year  = {2021},

date = {2021-04-00},

journal = {Phys. Rev. A},

volume = {103},

number = {4},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Carlesso2021,

title = {Perturbative algorithm for rotational decoherence},

author = {Matteo Carlesso and Hamid Reza Naeij and Angelo Bassi},

doi = {10.1103/physreva.103.032220},

issn = {2469-9934},

year  = {2021},

date = {2021-03-00},

journal = {Phys. Rev. A},

volume = {103},

number = {3},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gaona-Reyes2021,

title = {Gravitational interaction through a feedback mechanism},

author = {J. L. Gaona-Reyes and Matteo Carlesso and A. Bassi},

doi = {10.1103/physrevd.103.056011},

issn = {2470-0029},

year  = {2021},

date = {2021-03-00},

urldate = {2021-03-00},

journal = {Phys. Rev. D},

volume = {103},

number = {5},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Adler2021,

title = {The continuous spontaneous localization layering effect from a lattice perspective},

author = {S L Adler and A Bassi and Matteo Carlesso},

doi = {10.1088/1751-8121/abdbc8},

issn = {1751-8121},

year  = {2021},

date = {2021-02-26},

urldate = {2021-02-26},

journal = {J. Phys. A: Math. Theor.},

volume = {54},

number = {8},

publisher = {IOP Publishing},

abstract = {<jats:title>Abstract</jats:title>

               <jats:p>For a solid lattice, we rederive the continuous spontaneous localization (CSL) noise total energy gain of a test mass starting from a Lindblad formulation, and from a similar starting point rederive the geometry factor governing center of mass energy gain. We then suggest that the geometry factor can be used as a way to distinguish between low temperature cantilever motion saturation arising from CSL noise, and saturation arising from thermal leakage.</jats:p>},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Donadi2020,

title = {Underground test of gravity-related wave function collapse},

author = {Sandro Donadi and Kristian Piscicchia and Catalina Curceanu and Lajos Diósi and Matthias Laubenstein and Angelo Bassi},

doi = {10.1038/s41567-020-1008-4},

issn = {1745-2481},

year  = {2021},

date = {2021-01-00},

journal = {Nat. Phys.},

volume = {17},

number = {1},

pages = {74--78},

publisher = {Springer Science and Business Media LLC},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{El-Neaj2020,

title = {AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space},

author = {Yousef Abou El-Neaj and Cristiano Alpigiani and Sana Amairi-Pyka and Henrique Araújo and Antun Balaž and Angelo Bassi and Lars Bathe-Peters and Baptiste Battelier and Aleksandar Belić and Elliot Bentine and José Bernabeu and Andrea Bertoldi and Robert Bingham and Diego Blas and Vasiliki Bolpasi and Kai Bongs and Sougato Bose and Philippe Bouyer and Themis Bowcock and William Bowden and Oliver Buchmueller and Clare Burrage and Xavier Calmet and Benjamin Canuel and Laurentiu-Ioan Caramete and Andrew Carroll and Giancarlo Cella and Vassilis Charmandaris and Swapan Chattopadhyay and Xuzong Chen and Maria Luisa Chiofalo and Jonathon Coleman and Joseph Cotter and Yanou Cui and Andrei Derevianko and Albert De Roeck and Goran S. Djordjevic and Peter Dornan and Michael Doser and Ioannis Drougkakis and Jacob Dunningham and Ioana Dutan and Sajan Easo and Gedminas Elertas and John Ellis and Mai El Sawy and Farida Fassi and Daniel Felea and Chen-Hao Feng and Robert Flack and Chris Foot and Ivette Fuentes and Naceur Gaaloul and Alexandre Gauguet and Remi Geiger and Valerie Gibson and Gian Giudice and Jon Goldwin and Oleg Grachov and Peter W. Graham and Dario Grasso and Maurits van der Grinten and Mustafa Gündogan and Martin G. Haehnelt and Tiffany Harte and Aurélien Hees and Richard Hobson and Jason Hogan and Bodil Holst and Michael Holynski and Mark Kasevich and Bradley J. Kavanagh and Wolf von Klitzing and Tim Kovachy and Benjamin Krikler and Markus Krutzik and Marek Lewicki and Yu-Hung Lien and Miaoyuan Liu and Giuseppe Gaetano Luciano and Alain Magnon and Mohammed Attia Mahmoud and Sarah Malik and Christopher McCabe and Jeremiah Mitchell and Julia Pahl and Debapriya Pal and Saurabh Pandey and Dimitris Papazoglou and Mauro Paternostro and Bjoern Penning and Achim Peters and Marco Prevedelli and Vishnupriya Puthiya-Veettil and John Quenby and Ernst Rasel and Sean Ravenhall and Jack Ringwood and Albert Roura and Dylan Sabulsky and Muhammed Sameed and Ben Sauer and Stefan Alaric Schäffer and Stephan Schiller and Vladimir Schkolnik and Dennis Schlippert and Christian Schubert and Haifa Rejeb Sfar and Armin Shayeghi and Ian Shipsey and Carla Signorini and Yeshpal Singh and Marcelle Soares-Santos and Fiodor Sorrentino and Timothy Sumner and Konstantinos Tassis and Silvia Tentindo and Guglielmo Maria Tino and Jonathan N. Tinsley and James Unwin and Tristan Valenzuela and Georgios Vasilakis and Ville Vaskonen and Christian Vogt and Alex Webber-Date and André Wenzlawski and Patrick Windpassinger and Marian Woltmann and Efe Yazgan and Ming-Sheng Zhan and Xinhao Zou and Jure Zupan},

doi = {10.1140/epjqt/s40507-020-0080-0},

issn = {2196-0763},

year  = {2020},

date = {2020-12-00},

journal = {EPJ Quantum Technol.},

volume = {7},

number = {1},

publisher = {Springer Science and Business Media LLC},

abstract = {AbstractWe propose in this White Paper a concept for a space experiment using cold atoms to search for ultra-light dark matter, and to detect gravitational waves in the frequency range between the most sensitive ranges of LISA and the terrestrial LIGO/Virgo/KAGRA/INDIGO experiments. This interdisciplinary experiment, called Atomic Experiment for Dark Matter and Gravity Exploration (AEDGE), will also complement other planned searches for dark matter, and exploit synergies with other gravitational wave detectors. We give examples of the extended range of sensitivity to ultra-light dark matter offered by AEDGE, and how its gravitational-wave measurements could explore the assembly of super-massive black holes, first-order phase transitions in the early universe and cosmic strings. AEDGE will be based upon technologies now being developed for terrestrial experiments using cold atoms, and will benefit from the space experience obtained with, e.g., LISA and cold atom experiments in microgravity.KCL-PH-TH/2019-65, CERN-TH-2019-126},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Vinante2020,

title = {Narrowing the Parameter Space of Collapse Models with Ultracold Layered Force Sensors},

author = {A. Vinante and Matteo Carlesso and A. Bassi and A. Chiasera and S. Varas and P. Falferi and B. Margesin and R. Mezzena and H. Ulbricht},

doi = {10.1103/physrevlett.125.100404},

issn = {1079-7114},

year  = {2020},

date = {2020-09-00},

urldate = {2020-09-00},

journal = {Phys. Rev. Lett.},

volume = {125},

number = {10},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Zheng2020,

title = {Room temperature test of the continuous spontaneous localization model using a levitated micro-oscillator},

author = {Di Zheng and Yingchun Leng and Xi Kong and Rui Li and Zizhe Wang and Xiaohui Luo and Jie Zhao and Chang-Kui Duan and Pu Huang and Jiangfeng Du and Matteo Carlesso and Angelo Bassi},

doi = {10.1103/physrevresearch.2.013057},

issn = {2643-1564},

year  = {2020},

date = {2020-01-00},

journal = {Phys. Rev. Research},

volume = {2},

number = {1},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Carlesso2019b,

title = {Testing the gravitational field generated by a quantum superposition},

author = {Matteo Carlesso and A Bassi and M Paternostro and H Ulbricht},

doi = {10.1088/1367-2630/ab41c1},

issn = {1367-2630},

year  = {2019},

date = {2019-09-01},

urldate = {2019-09-01},

journal = {New J. Phys.},

volume = {21},

number = {9},

publisher = {IOP Publishing},

abstract = {<jats:title>Abstract</jats:title>

               <jats:p>What gravitational field is generated by a massive quantum system in a spatial superposition? Despite decades of intensive theoretical and experimental research, we still do not know the answer. On the experimental side, the difficulty lies in the fact that gravity is weak and requires large masses to be detectable. However, it becomes increasingly difficult to generate spatial quantum superpositions for increasingly large masses, in light of the stronger environmental effects on such systems. Clearly, a delicate balance between the need for strong gravitational effects and weak decoherence should be found. We show that such a trade off could be achieved in an optomechanics scenario that allows to witness whether the gravitational field generated by a quantum system in a spatial superposition is in a coherent superposition or not. We estimate the magnitude of the effect and show that it offers perspectives for observability.</jats:p>},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Adler2019,

title = {Testing continuous spontaneous localization with Fermi liquids},

author = {S L Adler and A Bassi and Matteo Carlesso and A Vinante},

doi = {10.1103/physrevd.99.103001},

issn = {2470-0029},

year  = {2019},

date = {2019-05-00},

urldate = {2019-05-00},

journal = {Phys. Rev. D},

volume = {99},

number = {10},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Nobakht2018,

title = {Unitary unraveling for the dissipative continuous spontaneous localization model: Application to optomechanical experiments},

author = {J. Nobakht and Matteo Carlesso and S. Donadi and M. Paternostro and A. Bassi},

doi = {10.1103/physreva.98.042109},

issn = {2469-9934},

year  = {2018},

date = {2018-10-00},

urldate = {2018-10-00},

journal = {Phys. Rev. A},

volume = {98},

number = {4},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Carlesso2018,

title = {Colored collapse models from the non-interferometric perspective},

author = {Matteo Carlesso and Luca Ferialdi and Angelo Bassi},

doi = {10.1140/epjd/e2018-90248-x},

issn = {1434-6079},

year  = {2018},

date = {2018-09-00},

journal = {Eur. Phys. J. D},

volume = {72},

number = {9},

publisher = {Springer Science and Business Media LLC},

abstract = {

                Abstract

                

Models of spontaneous wave function collapse describe the quantum-to-classical transition by assuming a progressive breakdown of the superposition principle when the mass of the system increases, providing a well-defined phenomenology in terms of a non-linearly and stochastically modified Schrödinger equation, which can be tested experimentally. The most popular of such models is the continuous spontaneous localization (CSL) model: in its original version, the collapse is driven by a white noise, and more recently, generalizations in terms of colored noises, which are more realistic, have been formulated. We will analyze how current non-interferometric tests bound the model, depending on the spectrum of the noise. We will find that low frequency purely mechanical experiments provide the most stable and strongest bounds.



              

                Graphical abstract

                

              },

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Carlesso2018b,

title = {Non-interferometric test of the continuous spontaneous localization model based on rotational optomechanics},

author = {Matteo Carlesso and Mauro Paternostro and Hendrik Ulbricht and Andrea Vinante and Angelo Bassi},

doi = {10.1088/1367-2630/aad863},

issn = {1367-2630},

year  = {2018},

date = {2018-08-01},

journal = {New J. Phys.},

volume = {20},

number = {8},

publisher = {IOP Publishing},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Carlesso2018c,

title = {Multilayer test masses to enhance the collapse noise},

author = {Matteo Carlesso and Andrea Vinante and Angelo Bassi},

doi = {10.1103/physreva.98.022122},

issn = {2469-9934},

year  = {2018},

date = {2018-08-00},

journal = {Phys. Rev. A},

volume = {98},

number = {2},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Toroš2017,

title = {Colored and dissipative continuous spontaneous localization model and bounds from matter-wave interferometry},

author = {Marko Toroš and Giulio Gasbarri and Angelo Bassi},

doi = {10.1016/j.physleta.2017.10.002},

issn = {0375-9601},

year  = {2017},

date = {2017-12-00},

journal = {Physics Letters A},

volume = {381},

number = {47},

pages = {3921--3927},

publisher = {Elsevier BV},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gasbarri2017,

title = {Gravity induced wave function collapse},

author = {G. Gasbarri and M. Toroš and S. Donadi and A. Bassi},

doi = {10.1103/physrevd.96.104013},

issn = {2470-0029},

year  = {2017},

date = {2017-11-00},

journal = {Phys. Rev. D},

volume = {96},

number = {10},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Bassi2017,

title = {Gravitational decoherence},

author = {Angelo Bassi and André Großardt and Hendrik Ulbricht},

doi = {10.1088/1361-6382/aa864f},

issn = {1361-6382},

year  = {2017},

date = {2017-10-05},

journal = {Class. Quantum Grav.},

volume = {34},

number = {19},

publisher = {IOP Publishing},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gasbarri2017b,

title = {General Galilei Covariant Gaussian Maps},

author = {Giulio Gasbarri and Marko Toroš and Angelo Bassi},

doi = {10.1103/physrevlett.119.100403},

issn = {1079-7114},

year  = {2017},

date = {2017-09-00},

journal = {Phys. Rev. Lett.},

volume = {119},

number = {10},

publisher = {American Physical Society (APS)},

keywords = {},

pubstate = {published},

tppubtype = {article}

}