Frequency-Domain Quantum Interference with Correlated Photons from an Integrated Microresonator

• URL: http://arxiv.org/abs/2003.06533v1
• Date: Sat, 14 Mar 2020 01:48:39 GMT
• Title: Frequency-Domain Quantum Interference with Correlated Photons from an Integrated Microresonator
• Authors: Chaitali Joshi, Alessandro Farsi, Avik Dutt, Bok Young Kim, Xingchen Ji, Yun Zhao, Andrew M. Bishop, Michal Lipson and Alexander L. Gaeta
• Abstract summary: We report frequency-domain Hong-Ou-Mandel interference with spectrally distinct photons generated from a chip-based microresonator. Our work establishes four-wave mixing as a tool for selective high-fidelity two-photon operations in the frequency domain.
• Score: 96.25398432840109
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Frequency encoding of quantum information together with fiber and integrated photonic technologies can significantly reduce the complexity and resource requirements for realizing all-photonic quantum networks. The key challenge for such frequency domain processing of single photons is to realize coherent and selective interactions between quantum optical fields of different frequencies over a range of bandwidths. Here, we report frequency-domain Hong-Ou-Mandel interference with spectrally distinct photons generated from a chip-based microresonator. We use four-wave mixing to implement an active frequency beam-splitter and achieve interference visibilities of $0.95 \pm 0.02$. Our work establishes four-wave mixing as a tool for selective high-fidelity two-photon operations in the frequency domain which, combined with integrated single-photon sources, provides a building block for frequency-multiplexed photonic quantum networks.

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