Discrete and parallel frequency-bin entanglement generation from quantum frequency comb

• URL: http://arxiv.org/abs/2411.18304v1
• Date: Wed, 27 Nov 2024 12:51:02 GMT
• Title: Discrete and parallel frequency-bin entanglement generation from quantum frequency comb
• Authors: Chi Lu, Xiaoyu Wu, Wenjun Wen, Xiao-song Ma,
• Abstract summary: We utilize polarization-entangled QFCs to generate discrete frequency-bin entangled states. 14 pairs of polarization-entangled photons with different frequencies are simultaneously transformed into frequency-bin entangled states.
• Score: 4.569473641235369
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• Abstract: Photons' frequency degree of freedom is promising to realize large-scale quantum information processing. Quantum frequency combs (QFCs) generated in integrated nonlinear microresonators can produce multiple frequency modes with narrow linewidth. Here, we utilize polarization-entangled QFCs to generate discrete frequency-bin entangled states. Fourteen pairs of polarization-entangled photons with different frequencies are simultaneously transformed into frequency-bin entangled states. The characteristic of frequency-bin entanglement is demonstrated by Hong-Ou-Mandel interference, which can be performed with single or multiple frequency pairs in parallel. Our work paves the way for harnessing large-scale frequency-bin entanglement and converting between different degrees of freedom in quantum information processing.

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