425 citations · 3.2k across the 81 of their papers we have counts for
7 papers · 2 filters
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…
Observation of three-state dressed states in circuit quantum electrodynamics
K. Koshino, H. Terai, K. Inomata +4
We have investigated the microwave response of a transmon qubit coupled directly to a transmission line. In a transmon qubit, owing to its weak anharmonicity, a single driving fiel…
Non-classical two-photon interference between independent telecom light pulses converted by difference-frequency generation
Rikizo Ikuta, Toshiki Kobayashi, Hiroshi Kato +9
We experimentally demonstrated the Hong-Ou-Mandel (HOM) interference between two photons after visible-to-telecommunication wavelength conversion. In the experiment, we prepared a…
Nonclasscial interference between independent intrinsically pure single photons at telecom wavelength
Ruibo Jin, Kentaro Wakui, Ryosuke Shimizu +7
We demonstrate a Hong-Ou-Mandel interference between two independent, intrinsically pure, heralded single photons from spontaneous parametric down conversion (SPDC) at telecom wave…