Nesi, F. and Grifoni, M. and Paladino, E. (2007) Dynamics of a qubit coupled to a broadened harmonic mode at finite detuning. NEW JOURNAL OF PHYSICS, 9: 316. ISSN 1367-2630,
Full text not available from this repository. (Request a copy)Abstract
We study the dynamics of a symmetric two-level system strongly coupled to a broadened harmonic mode. Upon mapping the problem on to a spin-boson model with peaked spectral density, we show how analytic solutions can be obtained, at arbitrary detuning and finite temperatures, in the case of large Q-factors of the oscillator. One, two or more dominating oscillation frequencies of the two-level particle can be observed as a consequence of the entanglement with the oscillator. Our approximated analytical solution agrees well with numerical predictions obtained within the non-interacting blip approximation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SPIN-BOSON MODEL; STRUCTURED ENVIRONMENT; FLUX QUBIT; QUANTUM; DECOHERENCE; CIRCUIT; PHOTON; CAVITY; STATES; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group Milena Grifoni |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Dec 2020 07:34 |
| Last Modified: | 01 Dec 2020 07:34 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32210 |
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