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2016-11-17 The press release "Accessing to quantum memory using telecom photonic technology"

Professor Imotos research group at Osaka University built an elemental quantum communication system including a cold Rb atomic ensemble based quantum memory, a single photon frequency converter, and superconducting single photon detectors and demonstrated the access to the quantum memory with the telecom photon detection in collaboration with Senior Researcher Mukai's group at NTT, Miki's group at NICT, and Professor Koashi of The University of Tokyo. In most cases, so far, the access to an atomic quantum memory has been performed only by photons near visible range, which is not suitable for the long distance fiber communication. The research team has developed single photon frequency converter and filled the gap between the frequencies, and then demonstrated the single atomic state preparation in the cold Rb atomic ensemble by the telecom single photon detection with superconducting single photon detectors. Such a quantum communication system opens up a next generation of long distance secure quantum communication.


This work has been published in on the online version of Optica on October 31 2016


Title:Heralded single excitation of atomic ensemble via solid-state-based telecom photon detection


Journal:Optica, DOI number: 10.1364/OPTICA.3.001279


Authors:Rikizo IKUTA, Toshiki KOBAYASHI, Kenichiro MATSUKI, Shigehito MIKI, Taro YAMASHITA, Hirotaka TERAI,Takashi YAMAMOTO, Masato KOASHI, Tetsuya MUKAI, Nobuyuki IMOTO


Imoto lab.
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