Quantum-Limited Squeezed Light Detection with a Camera

TL;DR

This paper introduces a camera-based technique for detecting squeezed light that achieves accuracy comparable to traditional methods, using direct imaging and statistical analysis of photon fluctuations.

Contribution

The study demonstrates a novel, camera-based approach for squeezed light detection that rivals standard methods in accuracy, with validated numerical simulations and experimental data.

Findings

Camera imaging accurately estimates squeezing parameters.

Method rivals balanced homodyne detection in precision.

Numerical simulations confirm theoretical predictions.

Abstract

We present a technique for squeezed light detection based on direct imaging of the displaced-squeezed-vacuum state using a CCD camera. We show that the squeezing parameter can be accurately estimated using only the first two moments of the recorded pixel-to-pixel photon fluctuation statistics, with accuracy that rivals that of the standard squeezing detection methods such as a balanced homodyne detection. Finally, we numerically simulate the camera operation, reproducing the noisy experimental results with low signal samplings and confirming the theory with high signal samplings.