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arXiv · 2411.18304

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

Chi Lu·Xiaoyu Wu·Wenjun Wen·Xiao-song Ma
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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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Chi Lu, Xiaoyu Wu, Wenjun Wen, Xiao-song Ma. 2024-11-27. Discrete and parallel frequency-bin entanglement generation from quantum frequency comb. https://doi.org/10.1002/qute.202400229

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