42 citations · 44 across the 2 of their papers we have counts for
6 papers
Unambiguous discrimination among oracle operators
Anthony Chefles, Akira Kitagawa, Masahiro Takeoka +2
We address the problem of unambiguous discrimination among oracle operators. The general theory of unambiguous discrimination among unitary operators is extended with this applicat…
Entanglement quantification with Fisher information
Akira kitagawa, Masahiro Takeoka, Masahide Sasaki +1
We show that the Fisher information associated with entanglement-assisted coding has a monotonic relationship with the logarithmic negativity, an important entanglement measure, fo…
Entanglement evaluation of non-Gaussian states generated by photon subtraction from squeezed states
Akira Kitagawa, Masahiro Takeoka, Masahide Sasaki +1
We consider the problem of evaluating the entanglement of non-Gaussian mixed states generated by photon subtraction from entangled squeezed states. The entanglement measures we use…
Effective squeezing enhancement via measurement-induced non-Gaussian operation and its application to dense coding scheme
Akira Kitagawa, Masahiro Takeoka, Kentaro Wakui +1
We study the measurement-induced non-Gaussian operation on the single- and two-mode \textit{Gaussian} squeezed vacuum states with beam splitters and on-off type photon detectors, w…
Analysis for practical realization of number-state manipulation by number-sum Bell measurement with linear optics
Akira Kitagawa, Katsuji Yamamoto
We analyze the linear optical realization of number-sum Bell measurement and number-state manipulation by taking into account the realistic experimental situation, specifically imp…
Teleportation-based number state manipulation with number sum measurement
Akira Kitagawa, Katsuji Yamamoto
We examine various manipulations of photon number states which can be implemented by teleportation technique with number sum measurement. The preparations of the Einstein-Podolsky-…