Quantum teleportation from a propagating photon to a solid-state spin qubit

被引：144

作者：

Gao, W. B. ^{[1
]}

Fallahi, P. ^{[1
]}

Togan, E. ^{[1
]}

Delteil, A. ^{[1
]}

Chin, Y. S. ^{[1
]}

Miguel-Sanchez, J. ^{[1
]}

Imamoglu, A. ^{[1
]}

机构：

[1] ETH, Inst Quantum Elect, CH-8093 Zurich, Switzerland

来源：

NATURE COMMUNICATIONS | 2013年 / 4卷

基金：

瑞士国家科学基金会;

关键词：

DOT SPIN; ENTANGLEMENT DISTRIBUTION; ELECTRON SPINS; SINGLE PHOTONS; COMPUTATION; INTERFERENCE; INFORMATION; BITS;

D O I：

10.1038/ncomms3744

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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 5m 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.

引用

页数：8

共 49 条

[1]

[Anonymous], 1984, P IEEE INT C COMP, DOI DOI 10.1016/J.TCS.2014.05.025

[2] Deterministic quantum teleportation of atomic qubits [J].