[9a-N304-1~10] KS.2 Quantum Information Engineering Group

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)

[9a-N304-1] [The 58th Young Scientist Presentation Award Speech] Emission and absorption type quantum repeaters by diamond quantum memories

〇Raustin Reyes^1,5, Taichi Fujiwara¹, Yuhei Sekiguchi^2,3, Toshiharu Makino^2,4, Hiromitsu Kato^2,4, Hideo Kosaka^1,2,3 (1.Grad. Sch. Eng., Yokohama Natl. Univ., 2.QIC, Yokohama Natl. Univ., 3.IAS, Yokohama Natl. Univ., 4.AIST, 5.NTT Network Innovation Laboratories)

Keywords:

quantum repeater,NV center,diamond

We are studying the nitrogen vacancy center (NV center) in diamond as a device to realize quantum repeater. In the photon emission and absorption type quantum repeater, the remote entanglement generation by a photon absorption occurs probabilistically. Here, we demonstrate that the probability of remote entanglement generation is improved by transferring photon information to the nitrogen spin quantum memory of the NV center and repeatedly emitting entangled photons while maintaining the quantum state, resulting in an improvement in the quantum repeater rate.