title: Quantum teleportation from a propagating photon to a solid-state spin qubit.
abstract: A quantum interface between a propagating photon used to transmit quantum information and a long-lived qubit used for storage is of central interest in quantum information science. A method for implementing such an interface between dissimilar qubits is quantum teleportation. Here we experimentally demonstrate transfer of quantum information carried by a photon to a semiconductor spin using quantum teleportation. In our experiment, a single photon in a superposition state is generated using resonant excitation of a neutral dot. To teleport this photonic qubit, we generate an entangled spin-photon state in a second dot located 5 m away and interfere the photons from the two dots in a Hong-Ou-Mandel set-up. Thanks to an unprecedented degree of photon-indistinguishability, a coincidence detection at the output of the interferometer heralds successful teleportation, which we verify by measuring the resulting spin state after prolonging its coherence time by optical spin-echo.
authors.affiliation: Institute of Quantum Electronics, ETH Zurich, CH-8093 Zurich, Switzerland.
authors.forename: W B
authors.initials: WB
authors.lastname: Gao
authors.forename: P
authors.initials: P
authors.lastname: Fallahi
authors.forename: E
authors.initials: E
authors.lastname: Togan
authors.forename: A
authors.initials: A
authors.lastname: Delteil
authors.forename: Y S
authors.initials: YS
authors.lastname: Chin
authors.forename: J
authors.initials: J
authors.lastname: Miguel-Sanchez
authors.forename: A
authors.initials: A
authors.lastname: Imamoğlu