122 citations · 146 across the 6 of their papers we have counts for
4 papers · 2 filters
Experimental Investigation of Nonideal Two-qubit Quantum-state Filter by Quantum Process Tomography
Yoshihiro Nambu, Kazuo Nakamura
We used quantum process tomography to investigate and identify the function of a nonideal two-qubit quantum-state filters subject to various degree of decoherence. We present a sim…
BB84 Quantum Key Distribution System based on Silica-Based Planar Lightwave Circuits
Yoshihiro Nambu, Takaaki Hatanaka, Kazuo Nakamura
We constructed an optical interferometer for a Bennett-Brassard quantum key distribution system using integrated optics based on planar lightwave circuit technology, and tested its…
Single-photon interference over 150-km transmission using silica-based integrated-optic interferometers for quantum cryptography
Tadamasa Kimura, Yoshihiro Nambu, Takaaki Hatanaka +3
We have demonstrated single-photon interference over 150 km using time-division interferometers for quantum cryptography, which were composed of two integrated-optic asymmetric Mac…
Observation of Antinormally Ordered Hanbury-Brown--Twiss Correlations
Koji Usami, Yoshihiro Nambu, Bao-Sen Shi +2
We have measured antinormally ordered Hanbury-Brown--Twiss correlations for coherent states of electromagnetic field by using stimulated parametric down-conversion process. Photons…