1303.2778 (Ruibo Jin et al.)

Nonclasscial interference between independent intrinsically pure single
photons at telecom wavelength    [PDF]

Ruibo Jin, Kentaro Wakui, Ryosuke Shimizu, Hugo Benichi, Shigehito Miki, Taro Yamashita, Hirotaka Terai, Zhen Wang, Mikio Fujiwara, Masahide Sasaki

We demonstrate a Hong-Ou-Mandel interference between two independent, intrinsically pure, heralded single photons from spontaneous parametric down conversion (SPDC) at telecom wavelength. A visibility of $85.5\pm8.3%$ was achieved without using any bandpass filter. Thanks to the group-velocity-matched SPDC and superconducting nanowire single photon detectors (SNSPDs), the 4-fold coincidence counts are one order higher than that in the previous experiments. The combination of bright single photon sources and SNSPDs is a crucial step for future practical quantum info-communication systems at telecom wavelength.

View original: http://arxiv.org/abs/1303.2778