Steady state entanglement in open and noisy quantum systems at high temperature

Details Steady state entanglement in open and noisy quantum systems at high temperature Steady state entanglement in open and noisy quantum systems at high temperature

2005-12-23

arxiv.org/abs/quant-ph/0512219v1

Phys. Rev. A. 74, 052304 (2006).

Physics

Quantum Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevA.74.052304

We show that quantum mechanical entanglement can prevail even in noisy open quantum systems at high temperature and far from thermodynamical equilibrium, despite the deteriorating effect of decoherence. The system consists of a number N of interacting quantum particles, and it can interact and exchange particles with some environment. The effect of decoherence is counteracted by a simple mechanism, where system particles are randomly reset to some standard initial state, e.g. by replacing them with particles from the environment. We present a master equation that describes this process, which we can solve analytically for small N. If we vary the interaction strength and the reset against decoherence rate, we find a threshold below which the equilibrium state is classically correlated, and above which there is a parameter region with genuine entanglement.

Affiliated with

Also associated with

No associations

Rating

Steady state entanglement in open and noisy quantum systems at high temperature 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 Steady state entanglement in open and noisy quantum systems at high temperature, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steady state entanglement in open and noisy quantum systems at high temperature will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-697236