3 papers
quant-ph2004
Quantum Estimation by Local Observables
M. Hotta, M. Ozawa
Quantum estimation theory provides optimal observations for various estimation problems for unknown parameters in the state of the system under investigation. However, the theory h…
quant-ph2003
Impossibility of distant indirect measurement of the quantum Zeno effect
M. Hotta, M. Morikawa
We critically study the possibility of quantum Zeno effect for indirect measurements. If the detector is prepared to detect the emitted signal from the core system, and the detecto…
cond-mat2000
Generalized Entropy Composition with Different q Indices: A Trial
K. Sasaki, M. Hotta
We analyze systematically composable composite entropy of two Tsallis subsystems with different q indices. H-theorem and thermal balance relation are commented.