The influence of phonon bath on the control of single photon

The influence of vacuum fluctuation and phonon bath on the probability of single photon emission are both consid- ered in the two-level system model theoretically; by using the master equations and generating function method we get the analytical expression of the second-order fluorescence correlati...

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Bibliographic Details
Published inChinese physics B Vol. 24; no. 6; pp. 591 - 597
Main Author 张威 芦海涛
Format Journal Article
LanguageEnglish
Published 01.06.2015
Subjects
Coherence
Lasers
Mathematical analysis
Mathematical models
Oscillations
Phonons
Photon emission
Photons
函数方法
单光子发射
单光子源
声子
模型理论
相关函数
相干控制
解析表达式
Online AccessGet full text
ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/24/6/067806

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Summary:The influence of vacuum fluctuation and phonon bath on the probability of single photon emission are both consid- ered in the two-level system model theoretically; by using the master equations and generating function method we get the analytical expression of the second-order fluorescence correlation function, probability of single photon emission, and Mandel＇s Q parameter. The results manifest that the coupling between the phonon bath and single photon source destroys the superposition state induced by the square laser pulse, the Rabi oscillation damped rapidly with the increasing of tem- perature. Theoretically, when the structure parameter of arsenide quantum dots tx scaled to O. 1 times of the sample, the critical coherence-temperature will rise up to hundreds of Kelvin, which means a step forward to the realization of coherent control of single photon source at room temperature.
Bibliography:Zhang Wei and Lu Hai-Tao（ Institute of Super-Microstructure and Ultrafast Process in Advanced Materials, School of Physics and Electronics, Central South University, Changsha 410012, China）
single photon, generating function, photon bath, phonon bath
The influence of vacuum fluctuation and phonon bath on the probability of single photon emission are both consid- ered in the two-level system model theoretically; by using the master equations and generating function method we get the analytical expression of the second-order fluorescence correlation function, probability of single photon emission, and Mandel＇s Q parameter. The results manifest that the coupling between the phonon bath and single photon source destroys the superposition state induced by the square laser pulse, the Rabi oscillation damped rapidly with the increasing of tem- perature. Theoretically, when the structure parameter of arsenide quantum dots tx scaled to O. 1 times of the sample, the critical coherence-temperature will rise up to hundreds of Kelvin, which means a step forward to the realization of coherent control of single photon source at room temperature.
11-5639/O4
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ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/24/6/067806