Non-Markovian decoherence and disentanglement scenarios in quantum Brownian motion

Details Non-Markovian decoherence and disentanglement scenarios in quantum Brownian motion Non-Markovian decoherence and disentanglement scenarios in quantum Brownian motion

2007-11-20

arxiv.org/abs/0711.3138v1

Physics

Quantum Physics

12 pages, 4 figures

Scientific paper

We study the non-Markovian decoherence and disentanglement dynamics of dissipative quantum systems with special emphasis on non-Gaussian continuous variable systems. The dynamics are described by the Hu-Paz-Zhang master equation of quantum Brownian motion. The time evolution of the decoherence function of a single-mode superposition is compared to the concurrence of a two-mode entangled state. It is verified that moderate non-Markovian influences slow down the decay of interference fringes and quantum correlations, while strong non-Markovian effects resulting from an out-of-resonance bath can even accelerate the loss of coherence, compared to predictions of Markovian approximations. Qualitatively different scenarios including exponential, Gaussian or algebraic decay of the decoherence function are analyzed. It is shown that partial revivals of coherence can occur in case of non-Lindblad-type dynamics.

Affiliated with

Also associated with

No associations

Rating

Non-Markovian decoherence and disentanglement scenarios in quantum Brownian motion 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 Non-Markovian decoherence and disentanglement scenarios in quantum Brownian motion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-Markovian decoherence and disentanglement scenarios in quantum Brownian motion will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-391948