%0 Journal Article
%T Entanglement between a Diamond Spin Qubit and a Photonic Time-Bin Qubit at Telecom Wavelength
%+ Delft University of Technology (TU Delft)
%+ The Netherlands Organisation for Applied Scientific Research (TNO)
%+ Kavli Institute of Nanosciences [Delft] (KI-NANO)
%+ Laboratoire Charles Coulomb (L2C)
%A Tchebotareva, Anna
%A Hermans, Sophie L. N.
%A Humphreys, Peter C.
%A Voigt, Dirk
%A Harmsma, Peter J.
%A Cheng, Lun K.
%A Verlaan, Ad L.
%A Dijkhuizen, Niels
%A de Jong, Wim
%A Dréau, Anaïs
%A Hanson, Ronald
%< avec comité de lecture
%Z L2C:19-247
%@ 0031-9007
%J Physical Review Letters
%I American Physical Society
%V 123
%N 6
%P 063601
%8 2019-08-05
%D 2019
%R 10.1103/PhysRevLett.123.063601
%Z Physics [physics]/Quantum Physics [quant-ph]Journal articles
%X We report on the realization and verification of quantum entanglement between a nitrogen-vacancy electron spin qubit and a telecom-band photonic qubit. First we generate entanglement between the spin qubit and a 637 nm photonic time-bin qubit, followed by photonic quantum frequency conversion that transfers the entanglement to a 1588 nm photon. We characterize the resulting state by correlation measurements in different bases and find a lower bound to the Bell state fidelity of ≥ 0.77± 0.03. This result presents an important step towards extending quantum networks via optical fiber infrastructure.
%G English
%2 https://hal.science/hal-02379667/document
%2 https://hal.science/hal-02379667/file/PhysRevLett.123.063601.pdf
%L hal-02379667
%U https://hal.science/hal-02379667
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021