Dynamics of Optically Driven Exciton and Quantum Decoherence
| Autor: | Liu Yu-Xi, Sun ChangPu, Jin Guang-Ri, Zhou Duan-Lu |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Quantum decoherence Physics and Astronomy (miscellaneous) Condensed matter physics Field (physics) Condensed Matter::Other Exciton Condensed Matter::Mesoscopic Systems and Quantum Hall Effect symbols.namesake Amplitude Quantum mechanics Dissipative system symbols Quantum dissipation Quantum well Schrödinger's cat |
| Zdroj: | Communications in Theoretical Physics. 39:723-728 |
| ISSN: | 0253-6102 |
| DOI: | 10.1088/0253-6102/39/6/723 |
| Popis: | By using the normal ordering method, we study the state evolution of an optically driven excitons in a quantum well immersed in a leaky cavity, which was introduced by Yu-Xi Liu, et al. [Phys. Rev. A63 (2001) 033816]. The influence of the external laser field on the quantum decoherence of a mesoscopically superposed state of the excitons is investigated. Our result shows that, the classical held can compensate the energy dissipation of the excitons. Although the decoherence rate of the excitonic Schrodinger cat state does not depend on the external field, the phase of the decoherence factor can be well controlled by adjusting the amplitude of the external field as well as the detuning between the field and the transition frequency of the atom. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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