Robust entanglement distribution via telecom fibre assisted by an asynchronous counter-propagating laser light

Koichiro Miyanishi¹, Yoshiaki Tsujimoto^1,2, Rikizo Ikuta^1,3, Shigehito Miki^4,5, Masahiro Yabuno⁴, Taro Yamashita^6,7, Hirotaka Terai⁴,Takashi Yamamoto^1,3, Masato Koashi⁸ and Nobuyuki Imoto^3,9

npj Quantum Information volume 6, Article number: 44 (2020)

¹Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.

²Advanced ICT Research Institute, National Institute of Information andCommunications Technology (NICT), Koganei, Tokyo 184-8795, Japan.

³Center for Quantum Information and Quantum Biology, Institute for Open and Transdisciplinary ResearchInitiatives, Osaka University, Osaka 560-8531, Japan.

⁴Advanced ICT Research Institute, National Institute of Information and Communications Technology (NICT), Kobe, Hyogo651-2492, Japan.

⁵Graduate School of Engineering, Kobe University, 1-1 Rokko-dai cho, Nada-ku, Kobe 657-0013, Japan.

⁶Graduate School of Engineering, Nagoya University,Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.

⁷JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.

⁸Photon Science Center, The University of Tokyo, Bunkyo-ku,Tokyo 113-8656, Japan.

⁹Institute for Photon Science and Technology, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.