Charge sensing amplification via weak values measurement

Zilberberg, Oded and Romito, Alessandro and Gefen, Yuval (2011) Charge sensing amplification via weak values measurement. Physical review letters, 106 (8). ISSN 0031-9007

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A protocol employing weak values (WVs) to obtain ultrasensitive amplification of weak signals in the context of a solid-state setup is proposed. We consider an Aharonov-Bohm interferometer where both the orbital and the spin degrees of freedom are weakly affected by the presence of an external charge to be detected. The interplay between the spin and the orbital WVs leads to a significant amplification even in the presence of finite temperature, voltage, and external noise.

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Journal Article
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Physical review letters
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02 Dec 2019 11:55
Last Modified:
14 Dec 2022 02:29