activity
20082023
most citedField test of quantum key distribution in the Tokyo QKD Network

1.2k citations · 2.7k across the 25 of their papers we have counts for

collaborators

25 papers

physics.ins-det2023★ 6 cited

Characterization of a Superconducting Microstrip Single-Photon Detector Shunted with an External Resistor

Yu-Ze Wang, Wei-Jun Zhang, Guang-Zhao Xu +6

A superconducting microstrip single-photon detector (SMSPD) generally requires a shunt resistor to avoid latching, caused by its high current-carrying capacity and low kinetic indu…

quant-ph2015★ 8 cited

Modified E91 protocol demonstration with hybrid entanglement photon source

Mikio Fujiwara, Ken-ichiro Yoshino, Yoshihiro Nambu +7

We report on an experimental demonstration of the modified Ekert 91 protocol of quantum key distribution using a hybrid entanglement source with two different degrees of freedoms,…

quant-ph2014★ 45 cited

Efficient generation of twin photons at telecom wavelengths with 10 GHz repetition-rate tunable comb laser

Rui-Bo Jin, Ryosuke Shimizu, Isao Morohashi +10

Efficient generation and detection of indistinguishable twin photons are at the core of quantum information and communications technology (Q-ICT). These photons are conventionally…

quant-ph2014★ 39 cited

A low-noise frequency down-conversion to the telecommunication band for a quantum communication based on NV centers in diamond

Rikizo Ikuta, Toshiki Kobayashi, Shuto Yasui +9

We demonstrate a low-noise frequency down-conversion of photons at 637 nm to the telecommunication band at 1587 nm by the difference frequency generation in a periodically-poled li…

physics.ins-det2014★ 71 cited

64-pixel NbTiN superconducting nanowire single-photon detector array for spatially resolved photon detection

Shigehito Miki, Taro Yamashita, Zhen Wang +1

We present the characterization of two-dimensionally arranged 64-pixel NbTiN superconducting nanowire single-photon detector array for spatially resolved photon detection. NbTiN fi…

quant-ph2013★ 87 cited

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…