255 citations · 977 across the 15 of their papers we have counts for
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Photon number resolving detection at telecom wavelength with a charge integration photon detector
Mikio Fujiwara, Masahide Sasaki
We demonstrate multiphoton discrimination at telecom wavelength with the readout frequency of 40 Hz by charge integration photon detector (CIPD). The CIPD consists of an InGaAs pin…
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…
Practical purification scheme for decohered coherent-state superpositions via partial homodyne detection
Shigenari Suzuki, Masahiro Takeoka, Masahide Sasaki +2
We present a simple protocol to purify a coherent-state superposition that has undergone a linear lossy channel. The scheme constitutes only a single beam splitter and a homodyne d…
Multiphoton discrimination at telecom wavelength with charge integration photon detector
Mikio Fujiwara, Masahide Sasaki
We present a charge integration photon detector (CIPD) that enables the efficient measurement of photon number states at the telecom-fiber wavelengths with a quantum efficiency of…
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…
Photon number squeezing of ultra-broadband laser pulses generated by microstructure fibers
K. Hirosawa, H. Furumochi, A. Tada +3
To the best of our knowledge, we demonstrate for the first time the generation of photon number squeezing by spectral filtering for ultra-broadband light generated by microstructur…