Progress in the generation of squeezed states of light

H Kimble

E. Giacobino, Thierry Debuisschert, Claude Fabre +3 more

Prem Kumar

Many demonstrations of the generation and application of squeezed light have recently been made. Progress in its application to spectroscopy,1 however, has been hampered by the lack of tunable sources of squeezed light. Present sources generate squeezing around a fixed frequency, whereas for spectroscopic applications, tunability is desirable. Here, I propose a scheme by which frequency-tunable squeezed light can be generated. I show that it is possible to change a light beam's frequency without affecting its quantum state. Consider the sum frequency process wherein a beam at ω1 is mixed with a pump beam at ω2 to generate the sum ω3 = ω1 + ω2.

Harry J. Kimble, Robert J. Brecha, Luis A. Orozco +3 more

Serge Reynaud, A. Heidmann

R. Loudon, P. L. Knight

In this paper we review the current state of progress in research on squeezed light. We discuss the basic theory of squeezing and the nature of quantum noise in optical fields. We examine various atomic sources of squeezed light and discuss phase-sensitive detectors of quantum noise including homodyne and heterodyne detectors. Various successful nonlinear optical methods for generating squeezed light are reviewed. We conclude with a discussion of the possible applications of squeezed light.