Stochastic resonance phenomena in spin chains

Details Stochastic resonance phenomena in spin chains Stochastic resonance phenomena in spin chains

2009-01-13

arxiv.org/abs/0901.1791v2

Eur. Phys. J. B 69, 51 (2009)

Physics

Quantum Physics

11 pages, 7 colour figures. Published version

Scientific paper

10.1140/epjb/e2009-00108-5

We discuss stochastic resonance-like effects in the context of coupled quantum spin systems. We focus here on an information-theoretic approach and analyze the steady state quantum correlations (entanglement) as well as the global correlations in the system when subject to different forms of local decoherence. In the presence of decay, it has been shown that the system displays quantum correlations only when the noise strength is above a certain threshold. We extend this result to the case of a Heisenberg XYZ exchange interaction and revise and clarify the mechanisms underlying this behaviour. In the presence of pure dephasing, we show that the system always remains separable in the steady state. When both types of noise are present, we show that the system can still exhibit entanglement for long times, provided that the pure dephasing rate is not too large.

Affiliated with

Also associated with

No associations

Rating

Stochastic resonance phenomena in spin chains does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Stochastic resonance phenomena in spin chains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stochastic resonance phenomena in spin chains will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-72139