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Open Quantum Systems Decoherence
Towards a dephasing diode: asymmetric and geometric dephasing
arXiv
Authors: Robert S. Whitney, Alexander Shnirman, Yuval Gefen
Year
2007
Paper ID
49129
Status
Preprint
Abstract Read
~2 min
Abstract Words
83
Citations
N/A
Abstract
We study the effect of a noisy environment on spin and charge transport in ballistic quantum wires with spin-orbit coupling (Rashba coupling). We find that the wire then acts as a "dephasing diode", inducing very different dephasing of the spins of right and left movers. We also show how Berry phase (geometric phase) in a curved wire can induce such asymmetric dephasing, in addition to purely geometric dephasing. We propose ways to measure these effects through spin detectors, spin-echo techniques, and Aharanov-Bohm interferometry.
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- This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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- We study the effect of a noisy environment on spin and charge transport in ballistic quantum wires with spin-orbit coupling (Rashba coupling).
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