Cooperative Lamb Shift in an Atomic Vapor Layer of Nanometer Thickness

Physical Review Letters (Impact Factor: 7.73). 01/2012;

ABSTRACT We present an experimental measurement of the cooperative Lamb shift and the Lorentz shift using a nanothickness atomic vapor layer with tunable thickness and atomic density. The cooperative Lamb shift arises due to the exchange of virtual photons between identical atoms. The interference between the forward and backward propagating virtual fields is confirmed by the thickness dependence of the shift, which has a spatial frequency equal to twice that of the optical field. The demonstration of cooperative interactions in an easily scalable system opens the door to a new domain for nonlinear optics.

  • Bulletin of The American Mathematical Society - BULL AMER MATH SOC. 01/1911; 17(1911).
  • [Show abstract] [Hide abstract]
    ABSTRACT: The book consists of nine chapters. In the first one, Planck’s law is formulated, Einstein’s coefficients are defined, and the principle of action of a laser is described. The second chapter is devoted to the quantum-mechanical description of atom radiation interaction. The Einstein coefficients are calculated, the optical Bloch equations are obtained, and the connection between them and the rate equations are investigated. In the third one, the author describes the statistical analysis of chaotic light sources, different types of interferometers, and the interference patterns that they give in chaotic light. The field quantization is the subject of the fourth chapter. The quantization of electromagnetic field, the interaction of the quantized field with atoms, and the second quantization of the atomic Hamiltonian are analyzed there. The fifth chapter is devoted to single-mode quantum optics, while the sixth one describes multimode and continuous-mode quantum optics. The seventh chapter deals with attenuation and amplification of a light beam, actions frequently needed in experiments. The eighth one is devoted to resonance fluorescence and light scattering. Elastic Rayleigh scattering and inelastic Raman scattering are described in this chapter. An introduction to nonlinear quantum optics is given in the ninth chapter. The book is written as a graduate-level textbook, and over 100 problems help to reinforce the understanding of the material presented.
    01/2000; Oxford Science Publications.


Available from
Jun 1, 2014