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Title: Spin gases as microscopic models for non-Markovian decoherence

Abstract

We analyze a microscopic decoherence model in which the total system is described as a spin gas. A spin gas consists of N classically moving particles with additional, interacting quantum degrees of freedom (e.g., spins). For various multipartite entangled probe states, we analyze the decoherence induced by interactions between the probe and environmental spins in such spin gases. We can treat mesoscopic environments ({approx_equal}10{sup 5} particles). We present results for a lattice gas, which could be realized by neutral atoms hopping in an optical lattice, and show the effects of non-Markovian and correlated noise, as well as finite-size effects.

Authors:
 [1];  [1];  [2]; ;  [1];  [3]
  1. Institut fuer Theoretische Physik, Universitaet Innsbruck, Technikerstrasse 25, A-6020 Innsbruck (Austria)
  2. (Spain)
  3. (Austria)
Publication Date:
OSTI Identifier:
20786443
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 72; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.72.052107; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; DEGREES OF FREEDOM; GASES; MARKOV PROCESS; NOISE; OPTICS; PARTICLES; PROBES; QUANTUM ENTANGLEMENT; SPIN

Citation Formats

Hartmann, L., Calsamiglia, J., Grup de Fisica Teorica and IFAE, Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona, Duer, W., Briegel, H.-J., and Institut fuer Quantenoptik und Quanteninformation der Oesterreichischen Akademie der Wissenschaften, Innsbruck. Spin gases as microscopic models for non-Markovian decoherence. United States: N. p., 2005. Web. doi:10.1103/PHYSREVA.72.0.
Hartmann, L., Calsamiglia, J., Grup de Fisica Teorica and IFAE, Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona, Duer, W., Briegel, H.-J., & Institut fuer Quantenoptik und Quanteninformation der Oesterreichischen Akademie der Wissenschaften, Innsbruck. Spin gases as microscopic models for non-Markovian decoherence. United States. doi:10.1103/PHYSREVA.72.0.
Hartmann, L., Calsamiglia, J., Grup de Fisica Teorica and IFAE, Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona, Duer, W., Briegel, H.-J., and Institut fuer Quantenoptik und Quanteninformation der Oesterreichischen Akademie der Wissenschaften, Innsbruck. Tue . "Spin gases as microscopic models for non-Markovian decoherence". United States. doi:10.1103/PHYSREVA.72.0.
@article{osti_20786443,
title = {Spin gases as microscopic models for non-Markovian decoherence},
author = {Hartmann, L. and Calsamiglia, J. and Grup de Fisica Teorica and IFAE, Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona and Duer, W. and Briegel, H.-J. and Institut fuer Quantenoptik und Quanteninformation der Oesterreichischen Akademie der Wissenschaften, Innsbruck},
abstractNote = {We analyze a microscopic decoherence model in which the total system is described as a spin gas. A spin gas consists of N classically moving particles with additional, interacting quantum degrees of freedom (e.g., spins). For various multipartite entangled probe states, we analyze the decoherence induced by interactions between the probe and environmental spins in such spin gases. We can treat mesoscopic environments ({approx_equal}10{sup 5} particles). We present results for a lattice gas, which could be realized by neutral atoms hopping in an optical lattice, and show the effects of non-Markovian and correlated noise, as well as finite-size effects.},
doi = {10.1103/PHYSREVA.72.0},
journal = {Physical Review. A},
number = 5,
volume = 72,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2005},
month = {Tue Nov 15 00:00:00 EST 2005}
}
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