Half-mirror for electrons on quantum Hall copropagating edge channels

• URL: http://arxiv.org/abs/2209.06725v1
• Date: Wed, 14 Sep 2022 15:32:49 GMT
• Title: Half-mirror for electrons on quantum Hall copropagating edge channels
• Authors: Takase Shimizu, Jun-ichiro Ohe, Akira Endo, Taketomo Nakamura, and Shingo Katsumoto
• Abstract summary: A half-mirror divides a spin-polarized electron into two parallel copropagating spin-resolved quantum Hall edge channels. The partition process was coherent, as confirmed by observing the Aharonov-Bohm oscillation at a high visibility of up to 60% in a Mach-Zehnder interferometer.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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 was coherent, as confirmed by observing the Aharonov-Bohm oscillation at a high visibility of up to 60% in a Mach-Zehnder interferometer, which comprised two such half-mirrors. The device characteristics were highly stable, making the device promising in the application of quantum information processing. The beam-splitting process is theoretically modelled, 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.

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