1.1k citations · 1.4k across the 12 of their papers we have counts for
12 papers
A squeezing invariant measurement to test displacement of quantum Gaussian states
Yoshiyuki Tsuda
We consider a hypothesis testing problem for displacement parameters of n independent copies of an m-mode squeezed quantum Gaussian state whose mixture parameter is known. Given n>…
Bhattacharyya inequality for quantum state estimation
Yoshiyuki Tsuda
Using higher-order derivative with respect to the parameter, we will give lower bounds for variance of unbiased estimators in quantum estimation problems. This is a quantum version…
Hypothesis testing for an entangled state produced by spontaneous parametric down conversion
Masahito Hayashi, Bao-Sen Shi, Akihisa Tomita +3
Generation and characterization of entanglement are crucial tasks in quantum information processing. A hypothesis testing scheme for entanglement has been formulated. Three designs…
A study of LOCC-detection of a maximally entangled state using hypothesis testing
Masahito Hayashi, Keiji Matsumoto, Yoshiyuki Tsuda
We study how well answer to the question ``Is the given quantum state equal to a certain maximally entangled state?'' using LOCC, in the context of hypothesis testing. Under severa…
Measurement of Neutrino Oscillation with KamLAND: Evidence of Spectral Distortion
The KamLAND Collaboration
We present results of a study of neutrino oscillation based on a 766 ton-year exposure of KamLAND to reactor anti-neutrinos. We observe 258 \nuebar\ candidate events with energies…
Accuracy of quantum-state estimation utilizing Akaike's information criterion
Koji Usami, Yoshihiro Nambu, Yoshiyuki Tsuda +2
We report our theoretical and experimental investigations into errors in quantum state estimation, putting a special emphasis on their asymptotic behavior. Tomographic measurements…