Author
Listed:
- Yasushi Hasegawa
(Osaka University)
- Rikizo Ikuta
(Osaka University
Osaka University)
- Nobuyuki Matsuda
(NTT Corporation
Graduate School of Engineering)
- Kiyoshi Tamaki
(University of Toyama)
- Hoi-Kwong Lo
(University of Toronto
University of Toronto
University of Toronto)
- Takashi Yamamoto
(Osaka University
Osaka University)
- Koji Azuma
(NTT Corporation
NTT Corporation)
- Nobuyuki Imoto
(Osaka University
Osaka University)
Abstract
An all-optical network is identified as a promising infrastructure for fast and energy-efficient communication. Recently, it has been shown that its quantum version based on ‘all-photonic quantum repeaters’—inheriting, at least, the same advantages—expands its possibility to the quantum realm, that is, a global quantum internet with applications far beyond the conventional Internet. Here we report a proof-of-principle experiment for a key component for the all-photonic repeaters—called all-photonic time-reversed adaptive (TRA) Bell measurement, with a proposal for the implementation. In particular, our TRA measurement—based only on optical devices without any quantum memories and any quantum error correction—passively but selectively performs the Bell measurement only on single photons that have successfully survived their lossy travel over optical channels. In fact, our experiment shows that only the survived single-photon state is faithfully teleported without the disturbance from the other lost photons, as the theory predicts.
Suggested Citation
Yasushi Hasegawa & Rikizo Ikuta & Nobuyuki Matsuda & Kiyoshi Tamaki & Hoi-Kwong Lo & Takashi Yamamoto & Koji Azuma & Nobuyuki Imoto, 2019.
"Experimental time-reversed adaptive Bell measurement towards all-photonic quantum repeaters,"
Nature Communications, Nature, vol. 10(1), pages 1-9, December.
Handle:
RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-018-08099-5
DOI: 10.1038/s41467-018-08099-5
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