Pure phase decoherence in a ring geometry

Z. Zhu; A. Aharony; O. Entin-Wohlman; P. C.E. Stamp

doi:10.1103/PhysRevA.81.062127

Pure phase decoherence in a ring geometry

Z. Zhu, A. Aharony, O. Entin-Wohlman, P. C.E. Stamp

Department of Physics

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We study the dynamics of pure phase decoherence for a particle hopping around an N-site ring, coupled both to a spin bath and to an Aharonov-Bohm flux which threads the ring. Analytic results are found for the dynamics of the influence functional and of the reduced density matrix of the particle, both for initial single wave-packet states, and for states split initially into two separate wave packets moving at different velocities. We also give results for the dynamics of the current as a function of time.

Original language	English
Article number	062127
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	81
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.81.062127
State	Published - 25 Jun 2010

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1103/PhysRevA.81.062127

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AB - We study the dynamics of pure phase decoherence for a particle hopping around an N-site ring, coupled both to a spin bath and to an Aharonov-Bohm flux which threads the ring. Analytic results are found for the dynamics of the influence functional and of the reduced density matrix of the particle, both for initial single wave-packet states, and for states split initially into two separate wave packets moving at different velocities. We also give results for the dynamics of the current as a function of time.

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Pure phase decoherence in a ring geometry

Abstract

ASJC Scopus subject areas

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