Probing Quantum Speed Limits with Ultracold Gases

被引：40

作者：

del Campo, Adolfo ^{[1
,2
,3
,4
,5
]}

机构：

[1] Univ Luxembourg, Dept Phys & Mat Sci, L-1511 Luxembourg, Luxembourg

[2] Donostia Int Phys Ctr, E-20018 San Sebastian, Spain

[3] Basque Fdn Sci, IKERBASQUE, E-48013 Bilbao, Spain

[4] Univ Massachusetts, Dept Phys, Boston, MA 02125 USA

[5] Los Alamos Natl Lab, Theory Div, MS-B213, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW LETTERS | 2021年 / 126卷 / 18期

关键词：

SCATTERING; SYSTEMS;

D O I：

10.1103/PhysRevLett.126.180603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantum speed limits (QSLs) rule the minimum time for a quantum state to evolve into a distinguishable state in an arbitrary physical process. These fundamental results constrain a notion of distance traveled by the quantum state, known as the Bums angle, in terms of the speed of evolution set by nonadiabatic energy fluctuations. I theoretically propose how to measure QSLs in an ultracold quantum gas confined in a time-dependent harmonic trap. In this highly-dimensional system of continuous variables, quantum tomography is prohibited. Yet, QSLs can be probed whenever the dynamics is self-similar by measuring as a function of time the cloud size of the ultracold gas. This makes it possible to determine the Bures angle and energy fluctuations, as I discuss for various ultracold atomic systems.

引用

页数：6

共 50 条

[41] Topological quantum matter with ultracold gases in optical lattices
Goldman N.
Budich J.C.
Zoller P.
Goldman, N. (ngoldman@ulb.ac.be), 1600, Nature Publishing Group (12): : 639 - 645
[42] Imaging of quantum Hall states in ultracold atomic gases
Douglas, James S.
Burnett, Keith
PHYSICAL REVIEW A, 2011, 84 (05):
[43] Microelectromagnets for trapping and manipulating ultracold atomic quantum gases
Fortágh, J
Ott, H
Schlotterbeck, G
Zimmermann, C
Herzog, B
Wharam, D
APPLIED PHYSICS LETTERS, 2002, 81 (06) : 1146 - 1148
[44] Prospects of ultracold Rydberg gases for quantum information processing
Reetz-Lamour, Markus
Amthor, Thomas
Deighnayr, Johannes
Westermann, Sebastian
Singer, Kilian
de Oliveira, Andre Luiz
Marcassa, Luis Gustavo
Weidemueller, Matthias
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS, 2006, 54 (8-10): : 776 - 787
[45] Quantum density anomaly in optically trapped ultracold gases
Rizzatti, Eduardo O.
Barbosa, Marco Aurelio A.
Barbosa, Marcia C.
PHYSICAL REVIEW A, 2020, 102 (03)
[46] Hanbury Brown Twiss effect for ultracold quantum gases
Schellekens, M
Hoppeler, R
Perrin, A
Gomes, JV
Boiron, D
Aspect, A
Westbrook, CI
SCIENCE, 2005, 310 (5748) : 648 - 651
[47] Ultracold atomic quantum gases far from equilibrium
Gasenzer, Thomas
Berges, Juergen
Schmidt, Michael G.
Seco, Marcos
NUCLEAR PHYSICS A, 2007, 785 (1-2) : 214C - 217C
[48] Quantum control of spin correlations in ultracold lattice gases
Hauke, P.
Sewell, R. J.
Mitchell, M. W.
Lewenstein, M.
PHYSICAL REVIEW A, 2013, 87 (02):
[49] Mesoscopic effects in quantum phases of ultracold quantum gases in optical lattices
Carr, L. D.
Wall, M. L.
Schirmer, D. G.
Brown, R. C.
Williams, J. E.
Clark, Charles W.
PHYSICAL REVIEW A, 2010, 81 (01):
[50] Quantum phase slips: from condensed matter to ultracold quantum gases
D'Errico, C.
Abbate, S. Scaffidi
Modugno, G.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2017, 375 (2108):

← 1 2 3 4 5 →