394 citations · 7.2k across the 232 of their papers we have counts for
8 papers · 1 filter
Unitary-process discrimination with error margin
T. Hashimoto, A. Hayashi, M. Hayashi +1
We investigate a discrimination scheme between unitary processes. By introducing a margin for the probability of erroneous guess, this scheme interpolates the two standard discrimi…
Updating Quantum Cryptography Report ver. 1
Donna Dodson, Mikio Fujiwara, Philippe Grangier +24
Quantum cryptographic technology (QCT) is expected to be a fundamental technology for realizing long-term information security even against as-yet-unknown future technologies. More…
The geometric measure of entanglement for a symmetric pure state with positive amplitudes
Masahito Hayashi, Damian Markham, Mio Murao +2
In this paper for a class of symmetric multiparty pure states we consider a conjecture related to the geometric measure of entanglement: 'for a symmetric pure state, the closest pr…
Capacity with energy constraint in coherent state channel
Masahito Hayashi
We consider two kind of energy constraints when the output state is a coherent state. One is a constraint on the total energy during a fixed period; the other is a constraint on th…
Exponential decreasing rate of leaked information in universal random privacy amplification
Masahito Hayashi
We derive a new upper bound for Eve's information in secret key generation from a common random number without communication. This bound improves on Bennett et al(1995)'s bound bas…
Differentiability of eigenfunctions of the closures of differential operators with rational coefficient functions
Fuminori Sakaguchi, Masahito Hayashi
In this paper, for an operator defined by the action of an M-th order differential operator with rational-type coefficients on the function space L_k^2(R):={f: measurable | \|f\|_k…