Stochastic resonance of quantum discord
Name
Lee-2011-Stochastic resonance of quantum discord.pdf
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415.06 KB
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Author(s)
Lee, Chee Kong
Kwek, Leong Chuan
Cao, Jianshu
Date Issued
December 2011
Journal
Physical Review A
Publisher
American Physical Society
Citation
Lee, Chee, Leong Kwek, and Jianshu Cao. “Stochastic Resonance of Quantum Discord.” Physical Review A 84.6 (2011):[5 pages]. ©2011 American Physical Society.
Version
Final published version
Abstract
We study the stochastic resonance of quantum discord (“discord resonance”) in coupled quantum systems and make a comparison with the stochastic resonance of entanglement (“entanglement resonance”). It is found that the discord resonance is much more robust against dephasing noise and thermal effects than the entanglement resonance. We also show that, unlike the entanglement resonance, the level of dissipation at which the discord resonance occurs is not sensitive to dephasing noise. These results suggest that it is easier to detect the discord resonance in actual experiments, where the dephasing noise and temperature are difficult to control.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevA.84.062113
