8 citations · 48 across the 17 of their papers we have counts for
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Asymptotic Compatibility between LOCC Conversion and Recovery
Kosuke Ito, Wataru Kumagai, Masahito Hayashi
Recently, entanglement concentration was explicitly shown to be irreversible. However, it is still not clear what kind of states can be reversibly converted in the asymptotic setti…
Random Number Conversion and LOCC Conversion via Restricted Storage
Wataru Kumagai, Masahito Hayashi
We consider random number conversion (RNC) through random number storage with restricted size. We clarify the relation between the performance of RNC and the size of storage in the…
Second-Order Asymptotics of Conversions of Distributions and Entangled States Based on Rayleigh-Normal Probability Distributions
Wataru Kumagai, Masahito Hayashi
We discuss the asymptotic behavior of conversions between two independent and identical distributions up to the second-order conversion rate when the conversion is produced by a de…
Trade-off between Performance and Reversibility of Entanglement Concentration for Pure Entangled State
Wataru Kumagai, Masahito Hayashi
In quantum information theory, it is widely believed that entanglement concentration for bipartite pure states is asymptotically reversible. In order to examine this, we give a pre…
Irreversibility of Entanglement Concentration for Pure State
Wataru Kumagai, Masahito Hayashi
For a pure state on a composite system , both the entanglement cost and the distillable entanglement coincide with the von…
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…