Conditional relaxation of a charge state under continuous weak measurement
| dc.creator | Khym, Gyong Luck | |
| dc.creator | Kang, Kicheon | |
| dc.date | 2008-05-14 | |
| dc.date.accessioned | 2026-07-07T09:38:47Z | |
| dc.date.available | 2026-07-07T09:38:47Z | |
| dc.description | We investigate the conditional evolution of a charge state coupled to a mesoscopic detector under continuous weak measurement. The state suffers relaxation into a particular state with a definite charge when electrons in a particular output lead are monitored in the detector. The process of the conditional relaxation is not restricted by the shot noise of the detector, unlike the case of the back-action dephasing. As a result, the relaxation of conditional evolution is much faster than the current-sensitive part of dephasing. Furthermore, the direction of the relaxation depends on the choice of the output lead. We propose that these properties can be verified in a two-path interferometer containing a quantum dot capacitively coupled to a detector. In this setup, the current-current correlation between the interferometer and the detector reveals characteristic features of conditional relaxation. | |
| dc.description | 4 pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/0805.1995 | |
| dc.identifier | http://arxiv.org/abs/0805.1995 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/160937 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Conditional relaxation of a charge state under continuous weak measurement | |
| dc.type | text |