The study of amplitude and phase relaxation impact on the quality of quantum information technologies

TL;DR

This paper investigates how amplitude and phase relaxation affect quantum state evolution, proposing models for polarizing qubits and analyzing the impact of dispersion and spectral degrees of freedom on quantum information quality.

Contribution

It introduces an analytic model for phase plate effects on polarizing states considering dispersion, enhancing understanding of noise impacts in quantum information systems.

Findings

Dispersion influences quantum state evolution in polarizing qubits.

Analytic models can predict phase plate impacts with dispersion effects.

Understanding relaxation effects improves quantum information fidelity.

Abstract

The influence of amplitude and phase relaxation on evolution of quantum states within the formalism of quantum operations is considered. The model of polarizing qubits where noises are determined by the existence of spectral degree of freedom that shows up during the light propagation inside anisotropic mediums with dispersion is studied. Approximate analytic model for calculation of phase plate impact on polarizing state with dispersion influence taken into consideration is suggested.