Tomography of multi-photon polarization states in conditions of non-unit quantum efficiency of detectors

TL;DR

This paper introduces a new quantum tomography protocol for multi-photon polarization states that accounts for detector inefficiencies and photon loss, improving accuracy over standard methods.

Contribution

A novel quantum tomography protocol that incorporates photon loss and detector inefficiency, enhancing the reliability of multi-photon state reconstruction.

Findings

The protocol effectively considers photon loss events.

Statistical analysis shows improved accuracy over standard methods.

Demonstrated advantages in practical scenarios.

Abstract

The polarizing multi-photon quantum states tomography with non-unit quantum efficiency of detectors is considered. A new quantum tomography protocol is proposed. This protocol considers events of losing photons of multi-photon quantum state in one or more channels among with n-fold coincidence events. The advantage of the proposed protocol compared with the standard n-fold coincidence protocol is demonstrated using the methods of statistical analysis.