Quantum Statistics of Nonlinear Optics

  • D. F. Walls
Part of the NATO ASI Series book series (NSSB, volume 135)


In these lectures we shall discuss a number of intrinsically quantum mechanical features of light. We begin with a discussion of photon statistics, including photon antibunching, and sub-Poissonian photon statistics.1 We then describe phase sensitive quantum fluctuations and the property of squeezing.2 Squeezed states of light have fewer fluctuations in one quadrature than a coherent state. This offers the possibility of an enhanced signal to noise ratio in optical communication systems compared to the quantum limit imposed using coherent light sources. Squeezed states also have potential applications in the detection of very weak forces such as gravitational radiation, where the quantum noise in the detector is comparable to the signal strength.


Coherent State Cavity Mode Photon Number Photon Statistic Output Field 
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Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • D. F. Walls
    • 1
    • 2
  1. 1.Institute for Theoretical PhysicsUniversity of CaliforniaSanta BarbaraUSA
  2. 2.Department of PhysicsUniversity of WaikatoHamiltonNew Zealand

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