Quantum Channel Modelling by Statistical Quantum Signal Processing

TL;DR

This paper models quantum signals using statistical signal processing techniques, focusing on Gaussian states and joint quantum noise, to analyze quantum channel capacity and develop quantum statistical signal processing methods.

Contribution

It introduces a novel quantum signal modeling approach based on statistical methods, incorporating joint quantum noise and capacity analysis.

Findings

Quantum Gaussian states are robust and significant in experiments.

The joint quantum noise model includes quantum Poisson and classical Gaussian noise.

Channel capacity analysis shows the impact of SNR on quantum communication.

Abstract

In this paper we are interested to model quantum signal by statistical signal processing methods. The Gaussian distribution has been considered for the input quantum signal as Gaussian state have been proven to a type of important robust state and most of the important experiments of quantum information are done with Gaussian light. Along with that a joint noise model has been invoked, and followed by a received signal model has been formulated by using convolution of transmitted signal and joint quantum noise to realized theoretical achievable capacity of the single quantum link. In joint quantum noise model we consider the quantum Poisson noise with classical Gaussian noise. We compare the capacity of the quantum channel with respect to SNR to detect its overall tendency. In this paper we use the channel equation in terms of random variable to investigate the quantum signals and noise model statistically. These methods are proposed to develop Quantum statistical signal processing and the idea comes from the statistical signal processing.