Long Distance Distribution of Entangled Photon Pair Over 300 km of Fiber
Takahiro Inagaki, Nobuyuki Matsuda, Osamu Tadanaga, Y. Nishida, Masaki Asobe, Hiroki Takesue · 2013
We report the experimental distribution of a time-bin entangled photon pair over 300 km of optical fiber, which is a record for long-distance quantum communication. The observed two-photon interference fringe exhibited a visibility of 84%.