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Density Matrix and Squeezed Vacuum State for General Coupling Harmonic Oscillator

SONGTong-Qiang, Tong-Qiang

Published Jan 1, 2003• 0 citations

Abstract

By taking a unitary transformation approach, we study two harmonic oscillators with both kinetic coupling and coordluate coupling terms, and derive the density matrix of the system. The results show that the ground state of the system is a rotated two single-mode squeezed state.

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