Effects of Kerr Medium and Stark Shift Parameter on Wehrl Entropy and the Field Purity for Two-Photon Jaynes–Cummings Model Under Dispersive Approximation
| Autor: | Sayed Abdel-Khalek, Javed Y. Khan, Eied M. Khalil, Abdullah F. Al Naim |
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| Rok vydání: | 2019 |
| Předmět: |
Density matrix
Physics Jaynes–Cummings model Field (physics) Time evolution Physics::Optics Wehrl entropy 02 engineering and technology 01 natural sciences Atomic and Molecular Physics and Optics 010309 optics symbols.namesake 020210 optoelectronics & photonics Stark effect Quantum state Quantum mechanics 0103 physical sciences Atom 0202 electrical engineering electronic engineering information engineering symbols Engineering (miscellaneous) |
| Zdroj: | Journal of Russian Laser Research. 40:20-29 |
| ISSN: | 1573-8760 1071-2836 |
| DOI: | 10.1007/s10946-019-09764-w |
| Popis: | We estimate the quantum state of a two-level atom and the coherent field in a Kerr medium subject to the cavity damping. The density matrix of the field is considered within the framework of the dispersive approximation. We study dynamical properties of the linear entropy, Wehrl entropy, and the Wehrl phase density during the time of interaction. The effects of the Kerr medium and cavity damping on the time evolution of different quantities are examined. The results refer to the sensitivity of these aspects to changes either in the decay parameter or in the Kerr-like medium and Stark-shift parameters. Linear entropy and nonclassical properties of the field quantified by the Wehrl entropy are also very sensitive to the Kerr medium and Stark-shift parameter. |
| Databáze: | OpenAIRE |
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