1303.1662 (Sigmund Kohler)

Measurement correlations in mesoscopic charge detection    [PDF]

Sigmund Kohler

We study a tunnel contact that acts as charge detector for a single-electron transistor (SET) focusing on correlations between the detector current and the current through the SET. This system can be fully described by a Markovian master equation for the SET, while electron tunneling in the charge monitor represents a doubly stochastic process that can be treated exactly. It turns out that current monitoring is possible as long as the detector current correlates with the currents through either SET barrier. By contrast, correlations with the effective current according to the Ramo-Shockley theorem are not essential. Moreover, we propose a measurement of the SET barrier capacitances.

View original: http://arxiv.org/abs/1303.1662