Evolution of the single-mode squeezed vacuum state in amplitude dissipative channel

TL;DR

This paper analyzes how a single-mode squeezed vacuum state evolves into a mixed, less-squeezed state under amplitude dissipation, providing explicit representations and examining photon statistics.

Contribution

It introduces a new method using entangled state representation to derive the evolution of the squeezed vacuum state in dissipative environments.

Findings

Initial state evolves into a squeezed chaotic state

Average photon number decreases over time

Photon statistics become more classical

Abstract

Using the way of deriving infinitive sum representation of density operator as a solution to the master equation describing the amplitude dissipative channel by virtue of the entangled state representation, we show manifestly how the initial density operator of a single-mode squeezed vacuum state evolves into a definite mixed state which turns out to be a squeezed chaotic state with decreasing-squeezing. We investigate average photon number, photon statistics distributions for this state.