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Quantum Optics Journal of the European Optical Society Part B

Eigenfunctions and eigenvalues of the generalized squeeze operator

Chi‐Fai Lo

Published Dec 1, 1991• 9 citations
Publisher

Abstract

The author has constructed the eigenfunctions and eigenvalue spectrum for the generalized squeeze operator in the Hilbert space of entire functions. Proper eigenstates exist only for beta > mod alpha mod with a discrete eigenvalue spectrum resembling that of a displaced simple harmonic oscillator, whereas for beta < mod alpha mod the generalized squeeze operator has continuum eigenfunctions only.

DOI
10.1088/0954-8998/3/6/003

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Journal of Physics A Mathematical and General•Feb 26, 2003•6 citations
The author has constructed the eigenfunctions and eigenvalue spectrum for the generalized squeeze operator in the Hilbert space of entire functions. Proper eigenstates exist only for beta > mod alpha mod with a discrete eigenvalue spectrum resembling that of a displaced simple harmonic oscillator, whereas for beta < mod alpha mod the generalized squeeze operator has continuum eigenfunctions only.
We generalized the squeeze and displacement operators of the one-dimensional harmonic oscillator to the three-dimensional case and based on these operators we construct the corresponding coherent and squeezed states. We have also calculated the Wigner function for the three-dimensional harmonic oscillator and from the analysis of time evolution of this function, the quantum Liouville equation is also presented. Further properties of the quantum states including Mandel's Q and quadrature squeezing parameters are discussed as well.