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.
Publication Source (Journal or Book title)
Physical Review Letters
Matekole, E., Cuozzo, S., Prajapati, N., Bhusal, N., Lee, H., Novikova, I., Mikhailov, E., Dowling, J., & Cohen, L. (2020). Quantum-Limited Squeezed Light Detection with a Camera. Physical Review Letters, 125 (11) https://doi.org/10.1103/PHYSREVLETT.125.113602