Entanglement between nitrogen-vacancy spin in diamond and telecom frequency photon
S.L.N. Hermans (TU Delft - QuTech Advanced Research Centre, TU Delft - QID/Hanson Lab)
A. Tchebotareva (TU Delft - BUS/TNO STAFF, TU Delft - QuTech Advanced Research Centre)
P.C. Humphreys (TU Delft - QID/Hanson Lab, TU Delft - QuTech Advanced Research Centre)
Dirk Voigt (TU Delft - BUS/TNO STAFF, TU Delft - QuTech Advanced Research Centre, TU Delft - Business Development)
P. J. Harmsma (TU Delft - QuTech Advanced Research Centre, TU Delft - QID/Hanson Lab, TU Delft - BUS/TNO STAFF)
Lun K. Cheng (TNO)
A. L. Verlaan (TNO)
A.E. Dréau (TU Delft - QuTech Advanced Research Centre, Universite Montpellier, Marcoule, TU Delft - QID/Hanson Lab)
R. Hanson (TU Delft - QID/Hanson Lab, TU Delft - QN/Hanson Lab, TU Delft - QuTech Advanced Research Centre)
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Abstract
We experimentally demonstrate the preservation of entanglement between an NV spin and a photon upon quantum frequency conversion to the Telecom band. This is a crucial step in realizing long-distance quantum networks.
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