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Title: Decoherence Dynamics in Low-Dimensional Cold Atom Interferometers

Abstract

We report on a study of the dynamics of decoherence of a matter-wave interferometer, consisting of a pair of low-dimensional cold atom condensates at finite temperature. We identify two distinct regimes in the time dependence of the coherence factor of the interferometer: quantum and classical. Explicit analytical results are obtained in both regimes. In particular, in the two-dimensional case in the classical (long time) regime, we find that the dynamics of decoherence is universal, exhibiting a power-law decay with an exponent, proportional to the ratio of the temperature to the Kosterlitz-Thouless temperature of a single 2D condensate. In the one-dimensional case in the classical regime we find a universal nonanalytic time dependence of decoherence, which is a consequence of the nonhydrodynamic nature of damping in 1D liquids.

Authors:
; ;  [1]
  1. Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States)
Publication Date:
OSTI Identifier:
20951363
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 20; Other Information: DOI: 10.1103/PhysRevLett.98.200404; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATOMS; CONDENSATES; INTERFEROMETERS; ONE-DIMENSIONAL CALCULATIONS; QUANTUM DECOHERENCE; TIME DEPENDENCE; TWO-DIMENSIONAL CALCULATIONS

Citation Formats

Burkov, A. A., Lukin, M. D., and Demler, Eugene. Decoherence Dynamics in Low-Dimensional Cold Atom Interferometers. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.200404.
Burkov, A. A., Lukin, M. D., & Demler, Eugene. Decoherence Dynamics in Low-Dimensional Cold Atom Interferometers. United States. doi:10.1103/PHYSREVLETT.98.200404.
Burkov, A. A., Lukin, M. D., and Demler, Eugene. Fri . "Decoherence Dynamics in Low-Dimensional Cold Atom Interferometers". United States. doi:10.1103/PHYSREVLETT.98.200404.
@article{osti_20951363,
title = {Decoherence Dynamics in Low-Dimensional Cold Atom Interferometers},
author = {Burkov, A. A. and Lukin, M. D. and Demler, Eugene},
abstractNote = {We report on a study of the dynamics of decoherence of a matter-wave interferometer, consisting of a pair of low-dimensional cold atom condensates at finite temperature. We identify two distinct regimes in the time dependence of the coherence factor of the interferometer: quantum and classical. Explicit analytical results are obtained in both regimes. In particular, in the two-dimensional case in the classical (long time) regime, we find that the dynamics of decoherence is universal, exhibiting a power-law decay with an exponent, proportional to the ratio of the temperature to the Kosterlitz-Thouless temperature of a single 2D condensate. In the one-dimensional case in the classical regime we find a universal nonanalytic time dependence of decoherence, which is a consequence of the nonhydrodynamic nature of damping in 1D liquids.},
doi = {10.1103/PHYSREVLETT.98.200404},
journal = {Physical Review Letters},
number = 20,
volume = 98,
place = {United States},
year = {Fri May 18 00:00:00 EDT 2007},
month = {Fri May 18 00:00:00 EDT 2007}
}
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