中国物理B ›› 2015, Vol. 24 ›› Issue (6): 67806-067806.doi: 10.1088/1674-1056/24/6/067806

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

The influence of phonon bath on the control of single photon

张威, 芦海涛   

  1. Institute of Super-Microstructure and Ultrafast Process in Advanced Materials,School of Physics and Electronics, Central South University, Changsha 410012, China
  • 收稿日期:2014-10-16 修回日期:2014-12-24 出版日期:2015-06-05 发布日期:2015-06-05
  • 基金资助:
    Project supported by the Fundamental Research Funds for the Central Universities of Central South University, China (Grant No. 2014zzts145).

The influence of phonon bath on the control of single photon

Zhang Wei (张威), Lu Hai-Tao (芦海涛)   

  1. Institute of Super-Microstructure and Ultrafast Process in Advanced Materials,School of Physics and Electronics, Central South University, Changsha 410012, China
  • Received:2014-10-16 Revised:2014-12-24 Online:2015-06-05 Published:2015-06-05
  • Contact: Zhang Wei E-mail:zhangweidoit@163.com
  • About author:78.67.Hc; 42.50.-p; 42.50.Ct; 42.50.Lc
  • Supported by:
    Project supported by the Fundamental Research Funds for the Central Universities of Central South University, China (Grant No. 2014zzts145).

摘要: The influence of vacuum fluctuation and phonon bath on the probability of single photon emission are both considered 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 temperature. Theoretically, when the structure parameter of arsenide quantum dots α scaled to 0.1 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.

关键词: single photon, generating function, photon bath, phonon bath

Abstract: The influence of vacuum fluctuation and phonon bath on the probability of single photon emission are both considered 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 temperature. Theoretically, when the structure parameter of arsenide quantum dots α scaled to 0.1 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.

Key words: single photon, generating function, photon bath, phonon bath

中图分类号:  (Quantum dots)

  • 78.67.Hc
42.50.-p (Quantum optics) 42.50.Ct (Quantum description of interaction of light and matter; related experiments) 42.50.Lc (Quantum fluctuations, quantum noise, and quantum jumps)