title: Charge sensing amplification via weak values measurement.
abstract: 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.
authors.affiliation: Department of Condensed Matter Physics, The Weizmann Institute of Science, Rehovot 76100, Israel.
authors.forename: Oded
authors.initials: O
authors.lastname: Zilberberg
authors.forename: Alessandro
authors.initials: A
authors.lastname: Romito
authors.forename: Yuval
authors.initials: Y
authors.lastname: Gefen