## Abstract

We show that the projection operator mod pq;ye^{i phi})(ye ^{i phi};pq mod , where mod pq;ye^{i phi}) is a squeezed state, obeys a partial differential equation in which the squeeze parameter y plays the role of time. It follows that related functions, such as the probability distribution functions and the Wigner function are solutions of this equation. This equation will be called a pseudodiffusion equation, because it resembles a diffusion equation in Minkowski space. We give general solutions of the pseudo-diffusion equation, first by the method of separation of variables and then by the Fourier transform method, and discuss the limitations of the latter method. The Fourier method is used to introduce squeezing into the number states, the thermal light and the Wigner function.

Original language | English |
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Article number | 019 |

Pages (from-to) | 4623-4637 |

Number of pages | 15 |

Journal | Journal of Physics A: Mathematical and General |

Volume | 28 |

Issue number | 16 |

DOIs | |

State | Published - 1 Dec 1995 |

## ASJC Scopus subject areas

- Statistical and Nonlinear Physics
- Mathematical Physics
- General Physics and Astronomy