中国物理B ›› 2015, Vol. 24 ›› Issue (11): 114202-114202.doi: 10.1088/1674-1056/24/11/114202

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Sub-Poissonian photon emission in coupled double quantum dots–cavity system

叶寒, 彭益炜, 俞重远, 张文, 刘玉敏   

  1. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2015-03-23 修回日期:2015-05-13 出版日期:2015-11-05 发布日期:2015-11-05
  • 通讯作者: Ye Han E-mail:Han_ye@bupt.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61372037 and 61401035), the Beijing Excellent Ph.D. Thesis Guidance Foundation, China (Grant No. 20131001301), and the Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications), China (Grant No. IPOC2015ZC05).

Sub-Poissonian photon emission in coupled double quantum dots–cavity system

Ye Han (叶寒), Peng Yi-Wei (彭益炜), Yu Zhong-Yuan (俞重远), Zhang Wen (张文), Liu Yu-Min (刘玉敏)   

  1. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2015-03-23 Revised:2015-05-13 Online:2015-11-05 Published:2015-11-05
  • Contact: Ye Han E-mail:Han_ye@bupt.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61372037 and 61401035), the Beijing Excellent Ph.D. Thesis Guidance Foundation, China (Grant No. 20131001301), and the Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications), China (Grant No. IPOC2015ZC05).

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摘要： In this work, we theoretically analyze the few-photon emissions generated in a coupled double quantum dots (CDQDs)-single mode microcavity system, under continuous wave and pulse excitation. Compared with the uncoupled case, strong sub-Poissonian character is achieved in a CDQDs-cavity system at a certain laser frequency. Based on the proposed scheme, single photon generation can be obtained separately under QD-cavity resonant condition and off-resonant condition. For different cavity decay rates, we reveal that laser frequency detunings of minimum second-order autocorrelation function are discrete and can be divided into three regions. Moreover, the non-ideal situation where two QDs are not identical is discussed, indicating the robustness of the proposed scheme, which possesses sub-Poissonian character in a large QD difference variation range.

关键词: sub-Poissonian statistics, quantum dots, microcavity, single photon

Abstract: In this work, we theoretically analyze the few-photon emissions generated in a coupled double quantum dots (CDQDs)-single mode microcavity system, under continuous wave and pulse excitation. Compared with the uncoupled case, strong sub-Poissonian character is achieved in a CDQDs-cavity system at a certain laser frequency. Based on the proposed scheme, single photon generation can be obtained separately under QD-cavity resonant condition and off-resonant condition. For different cavity decay rates, we reveal that laser frequency detunings of minimum second-order autocorrelation function are discrete and can be divided into three regions. Moreover, the non-ideal situation where two QDs are not identical is discussed, indicating the robustness of the proposed scheme, which possesses sub-Poissonian character in a large QD difference variation range.

Key words: sub-Poissonian statistics, quantum dots, microcavity, single photon

中图分类号:  (Cavity quantum electrodynamics; micromasers)

  • 42.50.Pq
78.67.Hc (Quantum dots)