Asymmetric transmission-induced probe-configuration-dependent dephasing in an Aharonov-Bohm ring

Kuan-Ting Lin; Yiping Lin; C. C. Chi; J. C. Chen

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Asymmetric transmission-induced probe-configuration-dependent dephasing in an Aharonov-Bohm ring

机译：Aharonov-Bohm环中非对称传输引起的探针构型相移

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We investigate the dephasing rates in quasiballistic Aharonov-Bohm (AB) rings with local- and nonlocal-probe configurations by tuning the transmission through one arm of the ring. The dephasing rates are independent of the probe configuration while the transmissions through the ring paths are equal. In contrast, as AB interferometers are tuned to be strongly asymmetric, the dephasing rate of the local configuration becomes larger than that of the nonlocal configuration. We find that our observations can be qualitatively explained by voltage fluctuations from the measurement circuit, as proposed by G. Seelig, S. Pilgram, A. N. Jordan, and M. Buettiker [Phys. Rev. B 68, 161310(R) (2003)].

机译：我们通过调整通过环的一个臂的传输来研究准球度Aharonov-Bohm（AB）环具有局部和非局部探针配置的移相速率。当通过环形路径的传输相等时，移相速率与探针配置无关。相反，随着AB干涉仪被调整为非对称性强，本地配置的移相速率变得比非本地配置的移相速率大。我们发现，如G.Seelig，S.Pilgram，A.N.Jordan和M.Buettiker提出的，测量电路中的电压波动可以定性地解释我们的观察结果。版本B 68，161310（R）（2003）]。

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来源
《Physical review》 |2011年第23期|p.235404.1-235404.5|共5页
作者
Kuan-Ting Lin; Yiping Lin; C. C. Chi; J. C. Chen;
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作者单位

Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan;

Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan;

Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan;

Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan;

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正文语种 eng
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ballistic transport; quantum wires;

机译：弹道运输;量子线;

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2. Aharonov-Bohm Conductance through a Single-Channel Quantum Ring:Persistent-Current Blockade and Zero-Mode Dephasing [J] . A. P. Dmitriev, I. V. Gornyi, V. Yu. Kachorovskii, Physical review letters . 2010,第3期

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3. Recovery of the Aharonov-Bohm oscillations in asymmetrical quantum rings [J] . O. Voskoboynikov AIP Advances . 2016,第7期

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4. Peculiarities of the Aharonov-Bohm Effect for Interacting Electrons in Thin Quantum Rings [C] . O.S. Bauzha, B. B. Sus’, I.V. Gavrilchenko, 2019 IEEE 39th International Conference on Electronics and Nanotechnology . 2019

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机译：aharonov-Bohm环中的探针配置相关退相干

Asymmetric transmission-induced probe-configuration-dependent dephasing in an Aharonov-Bohm ring

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