21 citations · 130 across the 12 of their papers we have counts for
4 papers · 1 filter
A Fundamental Upper Bound for Signal to Noise Ratio of Quantum Detectors
Ryota Katsube, Masahiro Hotta, Koji Yamaguchi
Quantum fluctuations yield inevitable noises in quantum detection. We derive an upper bound of signal to noise ratio for arbitrary quantum detection described by trace-class operat…
Strong Chaos of Fast Scrambling Yields Order: Emergence of Decoupled Quantum Information Capsules
Masahiro Hotta, Koji Yamaguchi
The information loss problem in black hole evaporation is one of fundamental issues. Its resolution requires more profound understanding of information storage mechanism in quantum…
Partner formula for an arbitrary moving mirror in dimensions
Takeshi Tomitsuka, Koji Yamaguchi, Masahiro Hotta
In the information loss problem in black hole evaporation, investigation of the purification partner of a Hawking particle is crucial. It is a well-known fact that 3+1 dimensional…
Quantum Information Capsule in Multiple-Qudit Systems and Continuous-Variable Systems
Koji Yamaguchi, Masahiro Hotta
Quantum correlations in an entangled many-body system are capable of storing information. Even when the information is injected by a local unitary operation to the system, the enta…