PT spectroscopy of the Rabi problem
| Autor: | Joglekar, Yogesh N., Marathe, Rahul, Durganandini, P., Pathak, Rajeev K. |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 90, 040101(R) (2014) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.90.040101 |
| Popis: | We investigate the effects of a time-periodic, non-hermitian, PT-symmetric perturbation on a system with two (or few) levels, and obtain its phase diagram as a function of the perturbation strength and frequency. We demonstrate that when the perturbation frequency is close to one of the system resonances, even a vanishingly small perturbation leads to PT symmetry breaking. We also find a restored PT-symmetric phase at high frequencies, and at moderate perturbation strengths, we find multiple frequency windows where PT-symmetry is broken and restored. Our results imply that the PT-symmetric Rabi problem shows surprisingly rich phenomena absent in its hermitian or static counterparts. Comment: 5 pages, 4 figures |
| Databáze: | arXiv |
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