A Quantum Imager for Intensity Correlated Photons

Details A Quantum Imager for Intensity Correlated Photons A Quantum Imager for Intensity Correlated Photons

2008-07-18

arxiv.org/abs/0807.3025v3

New J. Phys. 11 (2009) 013001

Physics

Quantum Physics

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

Scientific paper

10.1088/1367-2630/11/1/013001

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.

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