1.2k citations · 1.3k across the 5 of their papers we have counts for
5 papers
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…
Heralded single photon source at 1550 nm from pulsed parametric down conversion
Alexandre Soujaeff, Shigeki Takeuchi, Keiji Sasaki +2
Heralding of single photon at 1550 nm from pump pulsed non degenerate spontaneous parametric downconversion is demonstrated. P(1) and P(2) of our source are 0.1871 and 2.4 x 10 ^-3…
How much security does Y-00 protocol provide us ?
Tsuyoshi Nishioka, Toshio Hasegawa, Hirokazu Ishizuka +2
New quantum cryptography, often called Y-00 protocol, has much higher performance than the conventional quantum cryptographies. It seems that the conventional quantum cryptographic…
Key Disclosing in Multiphotons with Quantum Cloning
Tsuyoshi Nishioka, Toshio Hasegawa, Hirokazu Ishizuka
Multiphoton state in quantum cryptography decreases its security. Key disclosing with universal quantum cloning machine (UQCM) is considered in explicit manner. Although UQCM canno…
`Circular type' quantum key distribution
Tsuyoshi Nishioka, Hirokazu Ishizuka, Toshio Hasegawa
`Circular type' interferometric system for quantum key distribution is proposed. The system has naturally self-alignment and compensation of birefringence and also has enough effic…