Magazzu, L. and Forn-Diaz, P. and Belyansky, R. and Orgiazzi, J-L. and Yurtalan, M. A. and Otto, M. R. and Lupascu, A. and Wilson, C. M. and Grifoni, M. (2018) Probing the strongly driven spin-boson model in a superconducting quantum circuit. NATURE COMMUNICATIONS, 9: 1403. ISSN 2041-1723,
Full text not available from this repository. (Request a copy)Abstract
Quantum two-level systems interacting with the surroundings are ubiquitous in nature. The interaction suppresses quantum coherence and forces the system towards a steady state. Such dissipative processes are captured by the paradigmatic spin-boson model, describing a two-state particle, the "spin", interacting with an environment formed by harmonic oscillators. A fundamental question to date is to what extent intense coherent driving impacts a strongly dissipative system. Here we investigate experimentally and theoretically a superconducting qubit strongly coupled to an electromagnetic environment and subjected to a coherent drive. This setup realizes the driven Ohmic spin-boson model. We show that the drive reinforces environmental suppression of quantum coherence, and that a coherent-to-incoherent transition can be achieved by tuning the drive amplitude. An out-of-equilibrium detailed balance relation is demonstrated. These results advance fundamental understanding of open quantum systems and bear potential for the design of entangled light-matter states.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | RELAXATION; DYNAMICS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group Milena Grifoni |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 20 Mar 2020 07:40 |
| Last Modified: | 20 Mar 2020 07:40 |
| URI: | https://pred.uni-regensburg.de/id/eprint/14729 |
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