TY  - JOUR
AU  - Stevens, Martin J.
AU  - Baek, Burm
AU  - Dauler, Eric A.
AU  - Kerman, Andrew J.
AU  - Molnar, Richard J.
AU  - Hamilton, Scott A.
AU  - Berggren, Karl K.
AU  - Mirin, Richard P.
AU  - Nam, Sae Woo
PY  - 2010
DA  - 2010//
TI  - High-order temporal coherences of
chaotic and laser light
T2  - Opt. Express
JO  - Optics Express
SP  - 1430
EP  - 1437
VL  - 18
IS  - 2
KW  - SNSPD
AB  - 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.
N1  - SSPD
ID  - Stevens_etal2010
ER  -