Quantum-dot microlaser operating on the whispering gallery mode—A source of squeezed (sub-Poissonian) light

被引：0
作者：
A. V. Kozlovsky
A. N. Oraevsky
机构：
[1] Russian Academy of Sciences,Lebedev Physical Institute
来源：
Journal of Experimental and Theoretical Physics | 2000年 / 91卷
关键词：
Spontaneous Emission; Photon Number; Population Inversion; Reduce Density Matrix; Lasing Threshold;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The reduced density matrix method is used to calculate the quantum-statistical properties of the radiation of a quantum-dot laser operating on the whispering gallery mode of a dielectric microsphere. It is shown that under the conditions of strong coupling between the quantum dot and an electromagnetic field the radiation of such a laser can be in a nonclassical (sub-Poissonian) state. The laser scheme considered is characterized by an extremely low lasing threshold and a small number of saturation photons, as result of which lasing is possible with close to zero population inversion of the working levels, if g ≫ P ≫ γ ≫ Γ, where g is the field-matter interaction constant, P is the pumping rate, γ is the loss rate of the resonator, and Γ is the spontaneous emission rate. The largest squeezing inside the resonator-microsphere (the Fano factor F = 0.75) obtains for g ≫ P ≫ γ ≫ Γ, and the greatest squeezing in the fluctuation spectrum outside the resonator [V(ω = 0) ≈ 0.25] occurs for g ∼ P ∼ γ ≫ Γ, and in this case a substantial deviation of the photon number statistics of the radiation leaving the resonator from the Poissonian statistics is observed.
引用
收藏
页码：938 / 944
页数：6
相关论文
共 32 条
  • [1] Oraevskii A. N.(1995)undefined Kvantovaya Élektron. (Moscow) 25 211-undefined
  • [2] Scully M. O.(1994)undefined Phys. Rev. Lett. 72 210-undefined
  • [3] Velichanskii V. L.(1999)undefined Phys. Rev. A 59 2418-undefined
  • [4] Imamoglu A.(1999)undefined Phys. Rev. A 59 4756-undefined
  • [5] Yamamoto Y.(1999)undefined Zh. Éksp. Teor. Fiz. 115 1210-undefined
  • [6] Pelton M.(1985)undefined Phys. Rev. A 31 3761-undefined
  • [7] Yamamoto Y.(1984)undefined Phys. Rev. A 30 1386-undefined
  • [8] Benson O.(1987)undefined J. Opt. Soc. Am. B 4 1588-undefined
  • [9] Yamamoto Y.(1989)undefined Phys. Rev. A 40 5516-undefined
  • [10] Kozlovskii A. V.(1996)undefined Phys. Rev. A 53 1143-undefined
1234