94 citations · 170 across the 7 of their papers we have counts for
7 papers
The monodromy representation of a hypergeometric system in variables of rank
Jyoichi Kaneko, Keiji Matsumoto, Katsuyoshi Ohara +1
We study the monodromy representation of the hypergeometric system in variables of rank with parameters and . This system can be regar…
A system of hypergeometric differential equations in variables of rank
Jyoichi Kaneko, Keiji Matsumoto, Katsuyoshi Ohara +1
We define a hypergeometric series in variables with parameters, which reduces to the generalized hypergeometric series when , and to Lauricella's hy…
Entangled games are hard to approximate
Julia Kempe, Hirotada Kobayashi, Keiji Matsumoto +2
We establish the first hardness results for the problem of computing the value of one-round games played by a verifier and a team of provers who can share quantum entanglement. In…
Quantum Gambling Using Three Nonorthogonal States
W. -Y. Hwang, K. Matsumoto
We provide a quantum gambling protocol using three (symmetric) nonorthogonal states. The bias of the proposed protocol is less than that of previous ones, making it more practical.…
Generation of polarization-entangled photon pairs in a cascade of two type-I crystals pumped by femtosecond pulses
Y. Nambu, K. Usami, Y. Tsuda +2
We report the generation of polarization-entangled photons by femtosecond-pulse-pumped spontaneous parametric down-conversion in a cascade of two type-I crystals. Highly entangled…
Shor-Preskill Type Security-Proof for the Quantum Key Distribution without Public Announcement of Bases
W. -Y. Hwang, X. -B. Wang, K. Matsumoto +2
We give a Shor-Preskill type security-proof to the quantum key distribution without public announcement of bases [W.Y. Hwang et al., Phys. Lett. A 244, 489 (1998)]. First, we modif…