Decoherence by Quantum Telegraph Noise
| dc.creator | Abel, Benjamin | |
| dc.creator | Marquardt, Florian | |
| dc.date | 2008-05-07 | |
| dc.date | 2008-06-25 | |
| dc.date.accessioned | 2026-07-07T09:46:20Z | |
| dc.date.available | 2026-07-07T09:46:20Z | |
| dc.description | We investigate the time-evolution of a charge qubit subject to quantum telegraph noise produced by a single electronic defect level. We obtain results for the time-evolution of the coherence that are strikingly different from the usual case of a harmonic oscillator bath (Gaussian noise). When the coupling strength crosses a certain temperature-dependent threshold, we observe coherence oscillations in the strong-coupling regime. Moreover, we present the time-evolution of the echo signal in a spin-echo experiment. Our analysis relies on a numerical evaluation of the exact solution for the density matrix of the qubit. | |
| dc.description | 5 pages, 5 figures, added references | |
| dc.identifier | https://arxiv.org/abs/0805.0962 | |
| dc.identifier | http://arxiv.org/abs/0805.0962 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/163491 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Decoherence by Quantum Telegraph Noise | |
| dc.type | text |