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Probe-Configuration-Dependent Decoherence in an Aharonov-Bohm Ring

Kensuke Kobayashi·Hisashi Aikawa·Shingo Katsumoto·Yasuhiro Iye
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Abstract

We have measured transport through mesoscopic Aharonov-Bohm (AB) rings with two different four-terminal configurations. While the amplitude and the phase of the AB oscillations are well explained within the framework of the Landaur-Büttiker formalism, it is found that the probe configuration strongly affects the coherence time of the electrons, i.e., the decoherence is much reduced in the configuration of so-called nonlocal resistance. This result should provide an important clue in clarifying the mechanism of quantum decoherence in solids.

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Kensuke Kobayashi, Hisashi Aikawa, Shingo Katsumoto, Yasuhiro Iye. 2002-04-08. Probe-Configuration-Dependent Decoherence in an Aharonov-Bohm Ring. https://doi.org/10.1143/jpsj.71.2094

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