Heralded Amplification of Photonic Qubits
Optics express(2016)
摘要
We demonstrate postselection free heralded qubit amplification for Time-Bin qubits and single photon states in an all-fibre, telecom-wavelength, scheme that highlights the simplicity, stability and potential for fully integrated photonic solutions. Exploiting high-efficiency superconducting detectors, the gain, fidelity and the performance of the amplifier are studied as a function of loss. We also demonstrate the first heralded single photon amplifier with independent sources. This provides a significant advance towards demonstrating device-independent quantum key distribution as well as fundamental tests of quantum mechanics over extended distances.
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关键词
quantum communication,quantum computing,quantum optics,Hong-Ou-Mandel visibility,heralded amplification,high coupling efficiency,quantum communication,separable photons,telecom wavelengths,time-bin qubits
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