394 citations · 7.2k across the 232 of their papers we have counts for
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Optimal performance of generalized heat engines with finite-size baths of arbitrary multiple conserved quantities beyond i.i.d. scaling
Kosuke Ito, Masahito Hayashi
In quantum thermodynamics, effects of finiteness of the baths have been less considered. In particular, there is no general theory which focuses on finiteness of the baths of multi…
Discrimination power of a quantum detector
Christoph Hirche, Masahito Hayashi, Emilio Bagan +1
We investigate the ability of a quantum measurement device to discriminate two states or, generically, two hypothesis. In full generality, the measurement can be performed a number…
Verifiable fault-tolerance in measurement-based quantum computation
Keisuke Fujii, Masahito Hayashi
Quantum systems, in general, output data that cannot be simulated efficiently by a classical computer, and hence is useful for solving certain mathematical problems and simulating…
Optimal compression for identically prepared qubit states
Yuxiang Yang, Giulio Chiribella, Masahito Hayashi
We establish the ultimate limits to the compression of sequences of identically prepared qubits. The limits are determined by Holevo's information quantity and are attained through…
Finite-Block-Length Analysis in Classical and Quantum Information Theory
Masahito Hayashi
Coding technology is used in several information processing tasks. In particular, when noise during transmission disturbs communications, coding technology is employed to protect t…
Self-guaranteed measurement-based quantum computation
Masahito Hayashi, Michal Hajdusek
In order to guarantee the output of a quantum computation, we usually assume that the component devices are trusted. However, when the total computation process is large, it is not…
Unattainable & attainable bounds for quantum sensors
Masahito Hayashi, Sai Vinjanampathy, L. C. Kwek
In quantum metrology, it is widely believed that the quantum Cramer-Rao bound is attainable bound while it is not true. In order to clarify this point, we explain why the quantum C…