Decoherence as attenuation of mesoscopic echoes in a spin-chain channel

Details Decoherence as attenuation of mesoscopic echoes in a spin-chain channel Decoherence as attenuation of mesoscopic echoes in a spin-chain channel

2010-05-12

arxiv.org/abs/1005.2045v1

Phys. Rev. A 82, 012310 (2010)

Physics

Quantum Physics

12 pages, 7 figures

Scientific paper

10.1103/PhysRevA.82.012310

An initial local excitation in a confined quantum system evolves exploring the whole system, returning to the initial position as a mesoscopic echo at the Heisenberg time. We consider a two weakly coupled spin chains, a spin ladder, where one is a quantum channel while the other represents an environment. We quantify decoherence in the quantum channel through the attenuation of the mesoscopic echoes. We evaluate decoherence rates for different ratios between sources of amplitude fluctuation and dephasing in the inter-chain interaction Hamiltonian. The many-body dynamics is seen as a one-body evolution with a decoherence rate given by the Fermi golden rule.

Affiliated with

Also associated with

No associations

Rating

Decoherence as attenuation of mesoscopic echoes in a spin-chain channel 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 Decoherence as attenuation of mesoscopic echoes in a spin-chain channel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Decoherence as attenuation of mesoscopic echoes in a spin-chain channel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-499267