Proposal for detection of non-Markovian decay via current noise

Yueh-Nan Chen; Guang-Yin Chen

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Proposal for detection of non-Markovian decay via current noise

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摘要

We propose to detect non-Markovian decay of an exciton qubit coupled to multimode bosonic reservoir via shot-noise measurements. Nonequilibrium current noise is calculated for a quantum dot embedded inside a p-i-n junction. An additional term from non-Markovian effect is obtained in the derivation of noise spectrum. As examples, two practical photonic reservoirs, photon vacuum with the inclusion of cut-off frequency and surface plasmons, are given to show that the noise may become super-Poissonian due to this non-Markovian effect. Utilizing the property of super-radiance is further suggested to enhance the noise value.

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《Physical review, B. Condensed matter and materials physics》 |2008年第3期|035312.1-035312.6|共9页
作者
Yueh-Nan Chen; Guang-Yin Chen;
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作者单位

Department of Physics and National Center for Theoretical Sciences, National Cheng-Kung University, Tainan 701, Taiwan;

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正文语种英语
中图分类固体物理学;
关键词
collective excitations (including excitons; polarons; plasmons and other charge-density excitations); decoherence; open systems; quantum statistical methods; electronic transport in nanoscale materials and structures;

Proposal for detection of non-Markovian decay via current noise

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