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Entanglement Generation by Communication using Phase-Squeezed Light with Photon Loss
Fumiaki Matsuoka, Akihisa Tomita, Atsushi Okamoto
In order to implement fault-tolerant quantum computation, entanglement generation with low error probability and high success probability is required. We have proposed the use of s…
Generation of phase-squeezed optical pulses with large coherent amplitudes by post-selection of single photon and weak cross-Kerr non-linearity
Fumiaki Matsuoka, Akihisa Tomita, Yutaka Shikano
Phase-squeezed light can enhance the precision of optical phase estimation. The larger the photon numbers are and the stronger the squeezing is, the better the precision will be. W…
Evaluation of the phase randomness of the light source in quantum key distribution systems with an attenuated laser
Toshiya Kobayashi, Akihisa Tomita, Atsushi Okamoto
The phase randomized light is one of the key assumptions in the security proof of Bennett-Brassard 1984 (BB84) quantum key distribution (QKD) protocol implemented with an attenuate…