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Strong coupling of a single electron in silicon to a microwave photon

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Science  22 Dec 2016:
aal2469
DOI: 10.1126/science.aal2469

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Abstract

Silicon is vital to the computing industry due to the high quality of its native oxide and well-established doping technologies. Isotopic purification, and the resulting seconds-long quantum coherence times, have recently put Si at the forefront of efforts to create a solid state quantum processor. Here we demonstrate strong coupling of a single electron in a silicon double quantum dot to the photonic field of a microwave cavity, as shown by the observation of vacuum Rabi splitting. Strong coupling of a quantum dot electron to a cavity photon would allow for long-range qubit coupling, and the long-range entanglement of electrons in semiconductor quantum dots.

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