Projective versus weak measurement of charge in a mesoscopic conductor
Mesoscale and Nanoscale Physics
2015-06-22 v1
Abstract
We study the charge dynamics of a quantum dot as measured by a nearby quantum point contact probing the dot via individual single-particle wave packets. We contrast the two limiting cases of weak and strong system--detector coupling exerting vanishing and strong back-action on the system and analyze the resulting differences in the charge-charge correlator. Extending the study to multiple projective measurements modelling a continuous strong measurement, we identify a transition from a charge dynamics dominated by the system's properties to a universal dynamics governed by the measurement.
Keywords
Cite
@article{arxiv.1406.4762,
title = {Projective versus weak measurement of charge in a mesoscopic conductor},
author = {David Oehri and Andrei V. Lebedev and Gordey B. Lesovik and Gianni Blatter},
journal= {arXiv preprint arXiv:1406.4762},
year = {2015}
}