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Quantum Electronics

Source of intense radiation with nonclassical properties

Natalia Korolkova, Anatolii S Chirkin

Published Dec 31, 1994• 1 citation
Publisher

Abstract

An analysis is made of a new possibility of constructing a source of intense optical radiation with easily controlled quantum-statistical characteristics. The source is based on the interference between light waves that have passed through an anisotropic medium having a cubic nonlinearity. The role of the self-interaction and cross-interaction effects in the generation of light with nonclassical properties is identified.

DOI
10.1070/qe1994v024n12abeh000255

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An analysis is made of a new possibility of constructing a source of intense optical radiation with easily controlled quantum-statistical characteristics. The source is based on the interference between light waves that have passed through an anisotropic medium having a cubic nonlinearity. The role of the self-interaction and cross-interaction effects in the generation of light with nonclassical properties is identified.
Sources of highly nonclassical light are important building blocks of many proposed implementations of optical quantum technologies [1]. The most common realisations of nonclassical light sources are either based on two-level quantum emitters or on nonlinear sources of photon pairs and squeezed light [2] and are generally limited in the properties of the quantum states of light they can efficiently generate: single-photon states for two-level systems and squeezed states (with a Gaussian Wigner function) for nonlinear sources.
A theoretical analysis is made of the resonant interaction between a traveling monochromatic light wave of arbitrary intensity and polarization and the 1/21/2 and 10 transitions in gas atoms in a magnetic field. An analysis is made of the influence of atomic collisions and coherence of the Zeeman sublevels of the terms on the structure of nonlinear magnetooptic resonances in the amplitude and polarization characteristics of the wave. Some features of nonlinear magnetooptic resonances for laser excitation of atoms from the ground state are noted. A study is made of the Faraday rotation and self-rotation of the polarization ellipse of the radiation as a function of the detuning of the wave frequency, the saturation parameter, and the optical density of the gas. The stability of the polarization of light in the medium is discussed. It is noted that these laws may be used to analyze and control the radiation characteristics of lasers and amplifiers when the level of saturation of a resonant gaseous medium in a magnetic field is high.
An analysis is made of the propagation of a plane electromagnetic wave through a ring resonator containing a cell with a nonlinear optically active liquid. The influence of the spatial dispersion of the cubic nonlinearity on the amplitude and polarization characteristics of the output radiation is investigated in the steady-state regime. The transient problem is solved numerically in the instability region. It is shown that random changes in the intensity, ellipticity, and angle of rotation of the polarization ellipse of the output radiation are possible for certain values of the intensity of linearly polarized pump radiation, resonator parameters, and properties of the medium.