1.2k citations · 1.7k across the 20 of their papers we have counts for
20 papers
Time-bin entangled photon pair generation from Si micro-ring resonator
Ryota Wakabayashi, Mikio Fujiwara, Ken-ichiro Yoshino +3
We demonstrate time-bin entanglement generation in telecom wavelength using a 7 μm radius Si micro-ring resonator pumped by a continuous wave laser. The resonator structure can enh…
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,…
Field test of quantum key distribution in the Tokyo QKD Network
M. Sasaki, M. Fujiwara, H. Ishizuka +40
A novel secure communication network with quantum key distribution in a metropolitan area is reported. Different QKD schemes are integrated to demonstrate secure TV conferencing ov…
Performance of hybrid entanglement photon pair source for quantum key distribution
M. Fujiwara, M. Toyoshima, M. Sasaki +3
We report on the experimental demonstration of a source of hybrid entanglement pairs between two different degrees of freedom, a 1550 nm time-bin qubit and an 810 nm polarization q…
Proposed Experimental Test for Proving Quantum Contextuality with Non-entangled Photons
Yoshihiro Nambu
We present a new and feasible test proving quantum contextuality in four-dimensional Hiltbert space. In our scheme, a contradiction between quantum mechanics and noncontextual hidd…
Ultra fast quantum key distribution over a 97 km installed telecom fiber with wavelength-division multiplexing clock synchronization
Akihiro Tanaka, Mikio Fujiwara, Sae Woo Nam +10
We demonstrated ultra fast BB84 quantum key distribution (QKD) transmission at 625 MHz clock rate through a 97 km field-installed fiber using practical clock synchronization based…