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quant-ph2021
Non-standard entanglement structure of local unitary self-dual models as a saturated situation of repeatability in general probabilistic theories
Hayato Arai, Masahito Hayashi
We study the entanglement structure, i.e., the structure of quantum composite system from operational aspects. The structure is not uniquely determined in General Probabilistic The…
quant-ph2021★ 14 cited
Global Heisenberg scaling in noisy and practical phase estimation
Masahito Hayashi, Zi-Wen Liu, Haidong Yuan
Heisenberg scaling characterizes the ultimate precision of parameter estimation enabled by quantum mechanics, which represents an important quantum advantage of both theoretical an…
quant-ph2021
Quantum Private Information Retrieval for Quantum Messages
Seunghoan Song, Masahito Hayashi
Quantum private information retrieval (QPIR) for quantum messages is the protocol in which a user retrieves one of the multiple quantum states from one or multiple servers without…