394 citations · 7.2k across the 232 of their papers we have counts for
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Quantum hypothesis testing for quantum Gaussian states: Quantum analogues of chi-square, t and F tests
Wataru Kumagai, Masahito Hayashi
We treat quantum counterparts of testing problems whose optimal tests are given by chi-square, t and F tests. These quantum counterparts are formulated as quantum hypothesis testin…
Non-distillable entanglement guarantees distillable entanglement
Lin Chen, Masahito Hayashi
The monogamy of entanglement is one of the basic quantum mechanical features, which says that when two partners Alice and Bob are more entangled then either of them has to be less…
Concise and Tight Security Analysis of the Bennett-Brassard 1984 Protocol with Finite Key Lengths
Masahito Hayashi, Toyohiro Tsurumaru
We present a tight security analysis of the Bennett-Brassard 1984 protocol taking into account the finite size effect of key distillation, and achieving unconditional security. We…
Asymptotic local hypothesis testing between a pure bipartite state and the completely mixed state
Masaki Owari, Masahito Hayashi
In this paper, we treat an asymptotic hypothesis testing (or state discrimination with asymmetric treatment of errors) between an arbitrary fixed bipartite pure state and the compl…
Weaker entanglement guarantees stronger entanglement
Masahito Hayashi, Lin Chen
The monogamy of entanglement is one of the basic quantum mechanical features, which says that when two partners Alice and Bob are more entangled then either of them has to be less…
Changepoint Problem in Quantumn Setting
Daiki Akimoto, Masahito Hayashi
In the changepoint problem, we determine when the distribution observed has changed to another one. We expand this problem to the quantum case where copies of an unknown pure state…
Dual universality of hash functions and its applications to quantum cryptography
Toyohiro Tsurumaru, Masahito Hayashi
In this paper, we introduce the concept of dual universality of hash functions and present its applications to quantum cryptography. We begin by establishing the one-to-one corresp…