Výsledky vyhledávání - "General Physics: Statistical and Quantum Mechanics"

Exact Real-Time Longitudinal Correlation Functions of the Massive XXZ Chain

Autor: Jesko Sirker, Frank Göhmann, Karol K. Kozlowski, Constantin Babenko, Junji Suzuki

Publikováno v: Phys.Rev.Lett.
Phys.Rev.Lett., 2021, 126 (21), pp.210602. ⟨10.1103/PhysRevLett.126.210602⟩

We apply the recently developed thermal form factor expansion method to evaluate the real-time longitudinal spin-spin correlation functions of the spin-$\frac{1}{2}$ XXZ chain in the antiferromagnetically ordered regime at temperature $T=0$. An analy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20ce291b883ee1276c1b6271c181cf94
https://doi.org/10.1103/physrevlett.126.210602

Zobrazit plný text záznamu

Measurement-Based Variational Quantum Eigensolver

Autor: Wolfgang Dür, R. R. Ferguson, Luca Dellantonio, Christine A. Muschik, A. Al Balushi, Karl Jansen

Publikováno v: Physical review letters 126(22), 220501 (2021). doi:10.1103/PhysRevLett.126.220501

Physical review letters 126(22), 220501 (2021). doi:10.1103/PhysRevLett.126.220501
Variational quantum eigensolvers (VQEs) combine classical optimization with efficient cost function evaluations on quantum computers. We propose a new approach to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d77923b412bd35db5a35fa7b52a967b

Zobrazit plný text záznamu

Many-body Chern number from statistical correlations of randomized measurements

Autor: Maissam Barkeshli, Andreas Elben, Ze-Pei Cian, Mohammad Hafezi, Hossein Dehghani, Peter Zoller, Benoît Vermersch, Guanyu Zhu

Publikováno v: Physical Review Letters
Phys.Rev.Lett.
Phys.Rev.Lett., 2021, 126 (5), pp.050501. ⟨10.1103/PhysRevLett.126.050501⟩

One of the main topological invariants that characterizes several topologically-ordered phases is the many-body Chern number (MBCN). Paradigmatic examples include several fractional quantum Hall phases, which are expected to be realized in different

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5751a9219616d169ba57e1d4c13cb80f

Zobrazit plný text záznamu

Breakdown of Tan’s Relation in Lossy One-Dimensional Bose Gases

Autor: Jérôme Dubail, Isabelle Bouchoule

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2021, 126 (16), pp.160603. ⟨10.1103/PhysRevLett.126.160603⟩
Phys.Rev.Lett.
Phys.Rev.Lett., 2021, 126 (16), pp.160603. ⟨10.1103/PhysRevLett.126.160603⟩

In quantum gases with contact repulsion, the distribution of momenta of the atoms typically decays as $\sim 1/|p|^4$ at large momentum $p$. Tan's relation connects the amplitude of that $1/|p|^4$ tail to the adiabatic derivative of the energy with re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7032a759dfdbfca63cddbe83e8c0f0e3
https://hal-iogs.archives-ouvertes.fr/hal-03318184

Zobrazit plný text záznamu

Impulsively Excited Gravitational Quantum States: Echoes and Time-Resolved Spectroscopy

Autor: Valery Nesvizhevsky, K. V. Rajitha, A. Yu. Voronin, Ilia Tutunnikov, I. Sh. Averbukh

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2021, 126 (17), pp.170403. ⟨10.1103/PhysRevLett.126.170403⟩

We theoretically study an impulsively excited quantum bouncer (QB) - a particle bouncing off a surface in the presence of gravity. A pair of time-delayed pulsed excitations is shown to induce a wave-packet echo effect - a partial rephasing of the QB

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31e1ee00040445b17e7fd70ea81a28ce
https://pubmed.ncbi.nlm.nih.gov/33988422

Zobrazit plný text záznamu

Bilocal Bell inequalities violated by the quantum Elegant Joint Measurement

Autor: Armin Tavakoli, Nicolas Gisin, Cyril Branciard

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2021, 126 (22), pp.220401. ⟨10.1103/PhysRevLett.126.220401⟩
Phys.Rev.Lett.
Phys.Rev.Lett., 2021, 126 (22), pp.220401. ⟨10.1103/PhysRevLett.126.220401⟩
Physical review letters, Vol. 126, No 22 (2021) P. 220401

International audience; Network Bell experiments give rise to a form of quantum nonlocality that conceptually goes beyond Bell's theorem. We investigate here the simplest network, known as the bilocality scenario. We depart from the typical use of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d288447f3facc7d98d4f13025cf637c4
http://arxiv.org/abs/2006.16694

Zobrazit plný text záznamu

Sound propagation and quantum limited damping in a two-dimensional Fermi gas

Autor: Niclas Luick, Lennart Sobirey, Tilman Enss, Henning Moritz, Thomas Lompe, Hauke Biss, Markus Bohlen

Publikováno v: Phys.Rev.Lett.
Phys.Rev.Lett., 2020, 124 (24), pp.240403. ⟨10.1103/PhysRevLett.124.240403⟩

International audience; Strongly interacting two-dimensional Fermi systems are one of the great remaining challenges in many-body physics due to the interplay of strong local correlations and enhanced long-range fluctuations. Here, we probe the therm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a146e1f1599e16c4d39cc0d1680effd1
https://hal.archives-ouvertes.fr/hal-02518036

Zobrazit plný text záznamu

Quadrature coherence scale driven fast decoherence of bosonic quantum field states

Autor: Anaelle Hertz, Stephan De Bièvre

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2020, ⟨10.1103/PhysRevLett.124.090402⟩
Phys.Rev.Lett.
Phys.Rev.Lett., 2020, 124 (9), pp.090402. ⟨10.1103/PhysRevLett.124.090402⟩
Physical Review Letters, 2020, ⟨10.1103/PhysRevLett.124.090402⟩

We introduce, for each state of a bosonic quantum field, its quadrature coherence scale (QCS), a measure of the range of its quadrature coherences. Under coupling to a thermal bath, the purity and QCS are shown to decrease on a time scale inversely p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1ab312aacbc280438e25efa45b07ba4
https://hal.archives-ouvertes.fr/hal-02394344/file/NCTimescales20190910_HAL.pdf

Zobrazit plný text záznamu

A cosmic shadow on CSL

Autor: Martin, Jérôme, Vennin, Vincent

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2020, ⟨10.1103/PhysRevLett.124.080402⟩
Phys.Rev.Lett.
Phys.Rev.Lett., 2020, 124 (8), pp.080402. ⟨10.1103/PhysRevLett.124.080402⟩

The Continuous Spontaneous Localisation (CSL) model solves the measurement problem of standard quantum mechanics, by coupling the mass density of a quantum system to a white-noise field. Since the mass density is not uniquely defined in general relat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57639e9222c9fd82dcf0687b8ca20af3
https://hal.archives-ouvertes.fr/hal-02366688/document

Zobrazit plný text záznamu

Quantum information scrambling in a trapped-ion quantum simulator with tunable range interactions

Autor: Benoît Vermersch, Christian F. Roos, M. K. Joshi, Andreas Elben, Peter Zoller, Tiff Brydges, Rainer Blatt, Christine Maier

Publikováno v: Phys.Rev.Lett.
Phys.Rev.Lett., 2020, 124 (24), pp.240505. ⟨10.1103/PhysRevLett.124.240505⟩
Physical Review Letters

In ergodic many-body quantum systems, locally encoded quantum information becomes, in the course of time evolution, inaccessible to local measurements. This concept of "scrambling" is currently of intense research interest, entailing a deep understan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d55ce4a5777a1b2db80008d1aaefc5b
https://hal.archives-ouvertes.fr/hal-02475262

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání