The squeezed generalized amplitude damping channel

TL;DR

This paper introduces the squeezed generalized amplitude damping channel, extending the generalized amplitude damping model to include bath squeezing, and analyzes its properties and impact on quantum information capacity.

Contribution

It provides the Kraus representation of the squeezed generalized amplitude damping channel and explores its effects on quantum communication.

Findings

Derived the Kraus operators for the channel

Analyzed the classical capacity of the channel

Extended the model to include bath squeezing effects

Abstract

Squeezing of a thermal bath introduces new features absent in an open quantum system interacting with an uncorrelated (zero squeezing) thermal bath. The resulting dynamics, governed by a Lindblad-type evolution, extends the concept of a generalized amplitude damping channel, which corresponds to a dissipative interaction with a purely thermal bath. Here we present the Kraus representation of this map, which we call the squeezed generalized amplitude damping channel. As an application of this channel to quantum information, we study the classical capacity of this channel.