A Quantum Imager for Intensity Correlated Photons

Abstract

We report on a novel device capable of imaging second-order spatio-temporal correlations g2(x,t) between photons. The imager is based on a monolithic array of single-photon avalanche diodes (SPAD) implemented in CMOS technology and a simple algorithm to treat multiphoton time-of-arrival distributions from different SPAD pairs. It is capable of 80 ps temporal resolution with fluxes as low as 10 photons/s at room temperature. An important application might be the local imaging of g2 as a means of confirming the presence of true Bose-Einstein macroscopic coherence (BEC) of cavity exciton polaritons.

8 pages, 4 figures, references added. Accepted in NJP

References in corpus (2)

• Quantum Degenerate Exciton-Polaritons in Thermal Equilibrium
• Statistics of the polariton condensate

Cited by in corpus (6)

• Accessing higher order correlations by time-multiplexing
• Measuring high-order photon-number correlations in multimode pulsed quantum states
• Coincidence detection of spatially correlated photon pairs with a monolithic time-resolving detector array
• Intensity interferometry-based 3D imaging
• Single-photon SPAD imagers in biophotonics: Review and Outlook
• On the Application of a Monolithic Array for Detecting Intensity-Correlated Photons Emitted by Different Source Types