Half-Mirror for Electrons in Quantum Hall Copropagating Edge Channels in a Mach-Zehnder Interferometer
Half-Mirror for Electrons in Quantum Hall Copropagating Edge Channels in a Mach-Zehnder Interferometer
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马赫-曾德尔干涉仪中量子霍尔共传播边缘通道中电子的半镜
DOI：
10.1103/physrevapplied.19.034085
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发表时间：
2023
影响因子：
4.6
通讯作者：
Katsumoto Shingo
中科院分区：
文献类型：
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作者：
Shimizu Takase;Ohe Jun-ichiro;Endo Akira;Nakamura Taketomo;Katsumoto Shingo
本文提出了一种半反射镜，它将自旋极化电子分成两个平行的自旋分辨霍尔边缘通道，每个通道各半。分割过程是相干的，证实了观察Aharonov-Bohm振荡在高能见度高达85%的马赫-曾德尔干涉仪，其中包括两个这样的半反射镜。干涉仪的相干长度超过，这反映了共同传播信道对抗由耦合到环境引起的退相干的鲁棒性。此外，器件特性高度稳定，使得该器件在量子信息处理方面的应用前景广阔。对分束过程进行了理论建模，数值模拟成功地再现了实验观测。伴随自旋旋转的电子的分配被解释为通过自旋-轨道相互作用从轨道到自旋的角动量转移。
A half-mirror that divides a spin-polarized electron into two parallel copropagating spin-resolved quantum Hall edge channels one half each is presented in this study. The partition process is coherent, as confirmed by observing the Aharonov-Bohm oscillation at high visibility of up to 85% in a Mach-Zehnder interferometer, which comprises two such half-mirrors. The coherence length of the interferometer exceeds, which reflects the robust nature of the copropagating channels against the decoherence caused by the coupling to the environment. In addition, the device characteristics are highly stable, making the device promising in the application of quantum information processing. The beam-splitting process is theoretically modeled, and the numerical simulation successfully reproduces the experimental observation. The partition of the electron accompanied by the spin rotation is explained by the angular momentum transfer from the orbital to the spin via spin-orbit interactions.
影响因子：
38.3
作者：
Ubbelohde, Niels;Hohls, Frank;Haug, Rolf J.
通讯作者：
Haug, Rolf J.
影响因子：
1.8
作者：
Deviatov, E. V.;Egorov, S. V.;Sorba, L.
通讯作者：
Sorba, L.
影响因子：
16.6
作者：
通讯作者：
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