Bayesian approach to coherent combination of single photon beams

TL;DR

This paper presents a Bayesian method for coherently combining single photon beams, analyzing how phase fluctuations affect performance in low-photon scenarios using a first-principles approach.

Contribution

It introduces a Bayesian phase correction protocol for coherent beam combination under phase fluctuations in photon-starved conditions.

Findings

Performance depends on phase fluctuation strength

Bayesian correction improves beam combination efficiency

Analysis applicable to low-photon regimes

Abstract

We theoretically investigate the performance of coherent beam combination of two light beams under relative phase fluctuations in the photon starved regime. We apply a first-principles approach using the optimal Bayesian phase correction protocol. We analyze the efficiency of beam combination as a function of the phase fluctuations strength.