Engineering and Technology

On-chip parallel processing of quantum frequency comb

L. Zhang, C. Cui, et al.

Discover groundbreaking advancements in quantum information processing with an integrated photonic platform for generating and parallel processing quantum frequency combs. This innovative research, conducted by Liang Zhang, Chaohan Cui, Jianchang Yan, Yanan Guo, Junxi Wang, and Linran Fan, showcases simultaneous on-chip quantum interference and reconfiguration of frequency modes, paving the way for efficient applications in integrated photonics.

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Abstract

This paper presents an integrated photonic platform for generating and parallel processing quantum frequency combs (QFCs). Cavity-enhanced parametric down-conversion with a Sagnac configuration generates QFCs with identical spectral distributions. On-chip quantum interference of different frequency modes is achieved simultaneously using the same photonic circuit, maintaining high interference visibility across all modes. This allows on-chip QFC reconfiguration and demonstration of a high-dimensional Hong-Ou-Mandel effect. The platform is a significant step towards efficient quantum information processing using integrated photonics and the frequency degree of freedom.

Publisher

npj Quantum Information

Published On

Jun 13, 2023

Authors

Liang Zhang, Chaohan Cui, Jianchang Yan, Yanan Guo, Junxi Wang, Linran Fan

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