期刊
NATURE COMMUNICATIONS
卷 6, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms7236
关键词
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资金
- French ANR MIND
- ANR QDOM
- ERC starting grant QD-CQED [277885]
- CHISTERA project SSQN
- French Labex NANOSACLAY
- RENATECH network
- RF President grant [NSh-1085.2014.2]
- RF Government Grant [14.Z50.31.0021]
- RFBR
- European Research Council (ERC) [277885] Funding Source: European Research Council (ERC)
Entangling a single spin to the polarization of a single incoming photon, generated by an external source, would open new paradigms in quantum optics such as delayed-photon entanglement, deterministic logic gates or fault-tolerant quantum computing. These perspectives rely on the possibility that a single spin induces a macroscopic rotation of a photon polarization. Such polarization rotations induced by single spins were recently observed, yet limited to a few 10(-3) degrees due to poor spin-photon coupling. Here we report the enhancement by three orders of magnitude of the spin-photon interaction, using a cavity quantum electrodynamics device. A single hole spin in a semiconductor quantum dot is deterministically coupled to a micropillar cavity. The cavity-enhanced coupling between the incoming photons and the solid-state spin results in a polarization rotation by +/- 6 degrees when the spin is optically initialized in the up or down state. These results open the way towards a spin-based quantum network.
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