%0 Journal Article
%T High-order temporal coherences of
chaotic and laser light
%A Stevens, Martin J.
%A Baek, Burm
%A Dauler, Eric A.
%A Kerman, Andrew J.
%A Molnar, Richard J.
%A Hamilton, Scott A.
%A Berggren, Karl K.
%A Mirin, Richard P.
%A Nam, Sae Woo
%J Optics Express
%D 2010
%V 18
%N 2
%F Stevens_etal2010
%O SSPD
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=685), last updated on Fri, 16 Dec 2011 18:01:18 -0600
%X We demonstrate a new approach to measuring high-order temporal coherences that uses a four-element superconducting nanowire single-photon detector. The four independent, interleaved single-photon-sensitive elements parse a single spatial mode of an optical beam over dimensions smaller than the minimum diffraction-limited spot size. Integrating this device with four-channel time-tagging electronics to generate multi-start, multi-stop histograms enables measurement of temporal coherences up to fourth order for a continuous range of all associated time delays. We observe high-order photon bunching from a chaotic, pseudo-thermal light source, measuring maximum third- and fourth-order coherence values of 5.87 ± 0.17 and 23.1 ± 1.8, respectively, in agreement with the theoretically predicted values of 3! = 6 and 4! = 24. Laser light, by contrast, is confirmed to have coherence values of approximately 1 for second, third and fourth orders at all time delays.
%K SNSPD
%P 1430-1437