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On-demand photonic entanglement synthesizer
Shuntaro Takeda, Kan Takase, Akira Furusawa
Quantum information protocols require various types of entanglement, such as Einstein-Podolsky-Rosen (EPR), Greenberger-Horne-Zeilinger (GHZ), and cluster states. In optics, on-dem…
All-optical storage of phase-sensitive quantum states of light
Yosuke Hashimoto, Takeshi Toyama, Jun-ichi Yoshikawa +6
We experimentally demonstrate storage and on-demand release of phase-sensitive, photon-number superposition states of the form for an optical quant…
Excess Loss in Homodyne Detection Originating from Distributed Photocarrier Generation in Photodiodes
Takahiro Serikawa, Akira Furusawa
The distributed absorption of photons in photodiodes induces an excess noise in continuous-wave photodetection above the transit-time roll-off frequency. We show that it can be tre…
Schrödinger's cat in an optical sideband
Takahiro Serikawa, Jun-ichi Yoshikawa, Shuntaro Takeda +4
We propose a method to subtract a photon from a double sideband mode of continuous-wave light. The central idea is to use phase modulation as a frequency sideband beamsplitter in t…