Print Email Facebook Twitter Entanglement between a Diamond Spin Qubit and a Photonic Time-Bin Qubit at Telecom Wavelength Title Entanglement between a Diamond Spin Qubit and a Photonic Time-Bin Qubit at Telecom Wavelength Author Tchebotareva, A. (TU Delft BUS/General; TU Delft QuTech Advanced Research Centre; TNO) Hermans, S.L.N. (TU Delft QuTech Advanced Research Centre; TU Delft QID/Hanson Lab; Kavli institute of nanoscience Delft) Humphreys, P.C. (TU Delft QuTech Advanced Research Centre; TU Delft QID/Hanson Lab; Kavli institute of nanoscience Delft) Voigt, D. (TU Delft Business Development; TU Delft QuTech Advanced Research Centre; TNO) Harmsma, P.J. (TU Delft QuTech Advanced Research Centre; TU Delft QID/Hanson Lab; TNO) Cheng, Lun K. (TNO) Verlaan, Ad L. (TNO) Dijkhuizen, Niels (TNO) De Jong, Wim (TNO) Dréau, A.E. (TU Delft QID/Hanson Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft; Université de Montpellier) Hanson, R. (TU Delft QuTech Advanced Research Centre; TU Delft QID/Hanson Lab; TU Delft QN/Hanson Lab; Kavli institute of nanoscience Delft) Department Business Development Date 2019 Abstract 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. To reference this document use: http://resolver.tudelft.nl/uuid:12d4dd4e-212b-48b5-99af-53389e53e149 DOI https://doi.org/10.1103/PhysRevLett.123.063601 ISSN 0031-9007 Source Physical Review Letters, 123 (6) Part of collection Institutional Repository Document type journal article Rights © 2019 A. Tchebotareva, S.L.N. Hermans, P.C. Humphreys, D. Voigt, P.J. Harmsma, Lun K. Cheng, Ad L. Verlaan, Niels Dijkhuizen, Wim De Jong, A.E. Dréau, R. Hanson Files PDF PhysRevLett.123.063601.pdf 856.28 KB Close viewer /islandora/object/uuid:12d4dd4e-212b-48b5-99af-53389e53e149/datastream/OBJ/view