Quantum capacity of lossy channel with additive classical Gaussian noise : a perturbation approach

Abstract

For a quantum channel of additive Gaussian noise with loss, in the general case of $n$ copies input, we show that up to first order perturbation, any non-Gaussian perturbation to the product thermal state input has a less quantum information transmission rate when the input energy tend to infinitive.

4 pages

References in corpus (1)

• The capacity of a quantum channel for simultaneous transmission of classical and quantum information