394 citations · 7.2k across the 232 of their papers we have counts for
4 papers · 1 filter
A New Proof of the Direct Part of Stein's Lemma in Quantum Hypothesis Testing
Tomohiro Ogawa, Masahito Hayashi
The direct part of Stein's lemma in quantum hypothesis testing is revisited based on a key operator inequality between a density operator and its pinching. The operator inequality…
Variable length universal entanglement concentration by local operations and its application to teleportation and dense coding
Masahito Hayashi, Keiji Matsumoto
Using invariance of the -th tensored state w.r.t. the -th symmetric group, we propose a 'variable length' universal entanglement concentration without classical communication…
Optimal sequence of POVMs in the sense of Stein's lemma in quantum hypothesis testing
Masahito Hayashi
In this paper, we give another proof of quantum Stein's lemma by calculating the information spectrum, and study an asymptotic optimal measurement in the sense of Stein's lemma. We…
A Linear Programming Approach to Attainable Cramér-Rao type Bounds and Randomness Condition II
Masahito Hayashi
The author studies the Cramér-Rao type bound by a linear programming approach. By this approach, he found a necessary and sufficient condition that the Cramér-Rao type bound is att…