Silicon-on-insulator integrated source of polarization-entangled photons

作者: Laurent Olislager , Jassem Safioui , Stéphane Clemmen , Kien Phan Huy , Wim Bogaerts

DOI: 10.1364/OL.38.001960

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摘要: We report the experimental generation of polarization-entangled photons at telecommunication wavelengths using spontaneous four-wave mixing in silicon-on-insulator wire waveguides. The key component is a 2D coupler that transforms path entanglement into polarization output device. Using quantum state tomography we find produced has fidelity 88% with pure nonmaximally entangled state. violates CHSH Bell inequality by S=2.37±0.19.

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