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Theoretical study of photon statistics in Doppler cooling of two-level atoms.

机译:两能级原子多普勒冷却中光子统计的理论研究。

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摘要

Laser cooling of atoms has been a fast growing field of research during the recent years. A generic setting includes a two-level atom coupled to a reservoir of quantum oscillators and driven by a running or standing wave. It has been proposed in a series of papers by Shevy [17,18,19] that the properties of laser cooling may be modified if the atom is in a squeezed vacuum where the quantum fluctuations in one quadrature are less than the usual vacuum fluctuations.; In this thesis the ideas introduced by Shevy are pursued and further developed to demonstrate theoretically that the equilibrium cooling temperatures for the cesium and sodium atoms discussed widely in the literature can reach 21μK and 40μK respectively. These temperatures are reached at higher intensities and very small detuning. The cooling mechanism for the most commonly available states of the quantized electromagnetic field is discussed.; Along the way the role of the photon statistics in reaching the lower temperatures is studied for differently prepared states of the reservoir modes.
机译:近年来,原子的激光冷却一直是快速发展的研究领域。通用设置包括耦合到量子振荡器容器并由运行波或驻波驱动的两级原子。 Shevy [17,18,19]在一系列论文中提出,如果原子处于一个压缩的真空中(一个正交的量子涨落小于通常的真空涨落),则可以改变激光冷却的特性。 ;本文采用Shevy提出的思想并进一步发展,以从理论上证明文献中广泛讨论的铯和钠原子的平衡冷却温度分别可以达到21μK和40μK。这些温度是在较高的强度和很小的失谐下达到的。讨论了最常见的量化电磁场状态的冷却机理。对于储层模式的不同准备状态,研究了光子统计在达到较低温度中的作用。

著录项

  • 作者

    Tumasyan, Hovik.;

  • 作者单位

    University of Miami.;

  • 授予单位 University of Miami.;
  • 学科 Physics Optics.
  • 学位 Ph.D.
  • 年度 1999
  • 页码 116 p.
  • 总页数 116
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 光学;
  • 关键词

  • 入库时间 2022-08-17 11:47:58

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