Fast optimal frictionless atom cooling in harmonic traps: shortcut to adiabaticity.
TLDR
A method is proposed to cool down atoms in a harmonic trap without phase-space compression as in a perfectly slow adiabatic expansion, i.e., keeping the same populations of instantaneous levels in the initial and final traps, but in a much shorter time.Abstract:
A method is proposed to cool down atoms in a harmonic trap without phase-space compression as in a perfectly slow adiabatic expansion, i.e., keeping the same populations of instantaneous levels in the initial and final traps, but in a much shorter time. This may require that the harmonic trap become transiently an expulsive parabolic potential. The cooling times achieved are shorter than those obtained using optimal-control bang-bang methods and real frequencies.read more
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Journal ArticleDOI
Quantum Thermodynamics: A Dynamical Viewpoint
TL;DR: The emergence of the 0-law, I- law, II-law and III-law of thermodynamics from quantum considerations is presented and it is claimed that inconsistency is the result of faulty analysis, pointing to flaws in approximations.
Journal ArticleDOI
Shortcuts to adiabaticity: Concepts, methods, and applications
David Guéry-Odelin,Andreas Ruschhaupt,Anthony Kiely,E. Torrontegui,S. Martínez-Garaot,J. G. Muga +5 more
TL;DR: Shortcuts to adiabaticity (STA) as mentioned in this paper is a systematic approach to accomplish the same final state transfer in a faster manner, which is used for atomic and molecular physics.
Book ChapterDOI
Shortcuts to Adiabaticity
E. Torrontegui,S. Ibáñez,S. Martínez-Garaot,Michele Modugno,A. del Campo,David Guéry-Odelin,Andreas Ruschhaupt,Xi Chen,J. G. Muga +8 more
TL;DR: Shortcuts to adiabaticity as discussed by the authors are alternative fast processes which reproduce the same final populations, or even the same last state, as the adiabiabatic process in a finite, shorter time.
Journal ArticleDOI
Shortcuts to adiabaticity by counterdiabatic driving.
TL;DR: In this paper, experimentally realizable driving protocols are found for a large class of single-particle, many-body, and nonlinear systems without demanding the spectral properties as an input.
Journal ArticleDOI
Quantum speed limits: from Heisenberg’s uncertainty principle to optimal quantum control
Sebastian Deffner,Steve Campbell +1 more
TL;DR: In this paper, Paczynska et al. presented a visual representation of Einstein's gedanken experiment, Fig. 4, which was supported by the U.S National Science Foundation under Grant No. CHE-1648973.