Photon emission via vacuum-dressed intermediate states under ultrastrong coupling
| Autor: | Huang, Jin-Feng, Law, C. K. |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 89, 033827 (2014) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.89.033827 |
| Popis: | We investigate theoretically quantum effects of a cavity-atom system in which the upper two levels of a cascade-type three-level atom interact with a cavity field mode in the ultrastrong coupling regime. By exploiting the virtual photons carried by atom-cavity dressed states, we indicate how two external driving fields induce Raman transitions such that a continuous conversion of virtual photons into real photons can be achieved with a high probability. We present analytical and numerical solutions of the system. In addition, we show that the converted photons exhibit a bunching behavior in the steady state. Our scheme demonstrates that atom-cavity dressed states in the ultrastrong coupling regime can serve as intermediate states to invoke nonlinear optical processes. Comment: 9 pages, 8 figures |
| Databáze: | arXiv |
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