Geometric phase of a two-level system in a dissipative environment
| dc.creator | Fujikawa, Kazuo | |
| dc.creator | Hu, Ming-Guang | |
| dc.date | 2008-05-06 | |
| dc.date | 2009-05-09 | |
| dc.date.accessioned | 2026-07-07T13:12:46Z | |
| dc.date.available | 2026-07-07T13:12:46Z | |
| dc.description | The geometric (Berry) phase of a two-level system in a dissipative environment is analyzed by using the second-quantized formulation, which provides a unified and gauge-invariant treatment of adiabatic and nonadiabatic phases and is thus applicable to a quantitative analysis of transitional regions away from ideal adiabaticity. In view of the recent experimental observation of the Berry phase in a superconducting qubit, we illustrate our formulation for a concrete adiabatic case in the Ohmic dissipation. The correction to the total phase together with the geometry-dependent dephasing time is given in a transparent way. The behavior of the geometric phase away from ideal adiabaticity is also analyzed in some detail. | |
| dc.description | 7 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/0805.0645 | |
| dc.identifier | http://arxiv.org/abs/0805.0645 | |
| dc.identifier | Phys. Rev. A 79, 052107 (2009) | |
| dc.identifier | doi:10.1103/PhysRevA.79.052107 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/229679 | |
| dc.subject | Quantum Physics | |
| dc.title | Geometric phase of a two-level system in a dissipative environment | |
| dc.type | text |