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Decoherence suppression of open quantum systems through a strong coupling to non-Markovian reservoirs

Lei, Chan U. and Zhang, Wei-Min (2011) Decoherence suppression of open quantum systems through a strong coupling to non-Markovian reservoirs. Physical Review A, 84 (5). Art. No. 052116. ISSN 1050-2947. http://resolver.caltech.edu/CaltechAUTHORS:20111216-144937184

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Abstract

In this paper, we provide a mechanism of decoherence suppression for open quantum systems in general and that for a “Schrödinger cat-like” state in particular, through strong couplings to non-Markovian reservoirs. Different from the usual strategies in the literature of suppressing decoherence by decoupling the system from the environment, here the decoherence suppression employs a strong back-reaction from non-Markovian reservoirs. The mechanism relies on the existence of the singularities (bound states) of the nonequilibrium retarded Green function, which completely determines the dissipation and decoherence dynamics of open systems. As an application, we examine the decoherence dynamics of a photonic crystal nanocavity that is coupled to a waveguide. The strong non-Markovian suppression of decoherence for the “optical cat” state is attained.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevA.84.052116 DOIUNSPECIFIED
http://link.aps.org/doi/10.1103/PhysRevA.84.052116PublisherUNSPECIFIED
Additional Information:© 2011 American Physical Society. Received 18 September 2011; published 22 November 2011. This work is partially supported by the National Science Council of ROC under Contract No. NSC-99-2112-M-006- 008-MY3. We also acknowledge the support from the National Center for Theoretical Science of Taiwan.
Funders:
Funding AgencyGrant Number
National Science Council of ROC NSC-99-2112-M-006-008-MY3
National Center for Theoretical Science of TaiwanUNSPECIFIED
Classification Code:PACS: 03.65.Yz, 03.67.Pp, 05.70.Ln, 42.50.Dv
Record Number:CaltechAUTHORS:20111216-144937184
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20111216-144937184
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:28498
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:20 Dec 2011 22:59
Last Modified:04 Oct 2016 19:08

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