189 citations · 2.2k across the 41 of their papers we have counts for
8 papers · 1 filter
Pulsed Sagnac polarization-entangled photon source with a PPKTP crystal at telecom wavelength
Rui-Bo Jin, Ryosuke Shimizu, Kentaro Wakui +6
We demonstrate pulsed polarization-entangled photons generated from a periodically poled (PPKTP) crystal in a Sagnac interferometer configuration at telecom wav…
Observation of two output light pulses from a partial wavelength converter preserving phase of an input light at a single-photon level
Rikizo Ikuta, Toshiki Kobayashi, Hiroshi Kato +9
We experimentally demonstrate that both a converted and an unconverted light pulses after wavelength conversion with various conversion efficiencies preserve phase information of a…
Efficient detection of a highly bright photon source using superconducting nanowire single photon detectors
Rui-Bo Jin, Mikio Fujiwara, Taro Yamashita +6
We investigate the detection of an ultra-bright single-photon source using highly efficient superconducting nanowire single-photon detectors (SNSPDs) at telecom wavelengths. Both t…
Countermeasure against tailored bright illumination attack for DPS-QKD
Toshimori Honjo, Mikio Fujiwara, Kaoru Shimizu +6
We propose a countermeasure against the so-call tailored bright illumination attacl dor Differential-Phase-Shift QKD (DPS-QKD). By Monitoring a rate of coincidence detection at a p…
Low-Filling-Factor Superconducting Single Photon Detector with High System Detection Efficiency
Taro Yamashita, Shigehito Miki, Hirotaka Terai +1
We designed, fabricated, and measured superconducting nanowire single-photon detectors (SSPDs) with low filling factor which achieve high system detection efficiency (SDE) and coun…
High performance fiber-coupled NbTiN superconducting nanowire single photon detectors with Gifford-McMahon cryocooler
Shigehito Miki, Taro Yamashita, Hirotaka Terai +1
We present high performance fiber-coupled niobium titanium nitride superconducting nanowire single photon detectors fabricated on thermally oxidized silicon substrates. The best de…