Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

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

Chaitali Joshi, Alessandro Farsi, Avik Dutt, Bok Young Kim, Xingchen Ji, Yun Zhao, Andrew M. Bishop, Michal F. Lipson, Alexander L. Gaeta

Published Jan 1, 2020• 0 citations
Publisher

Abstract

We report frequency-domain quantum interference with spectrally distinct photons from a microresonator. We create an active, tunable ‘frequency beam splitter’ via Bragg-scattering four- wave mixing and achieve interference visibilities of 0.95 ±0.02.
DOI
10.1364/cleo_qels.2020.ftu4c.6

Related papers

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

Chaitali Joshi, Alessandro Farsi, Avik Dutt +6 more

We report frequency-domain Hong-Ou-Mandel interference with correlated photons generated from a microresonator. We implement an active frequency beam splitter via Bragg-scattering four wave mixing and achieve interference visibilities of 0.95 ± 0.02

OSA Quantum 2.0 Conference•Jan 1, 2020•1 citation

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

Chaitali Joshi, Alessandro Farsi, Avik Dutt +6 more

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±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.

arXiv:2003.06533•Physical Review Letters•Apr 6, 2020•74 citations

NOON-state interference in the frequency domain

Dongjin Lee, Woncheol Shin, Sebae Park +2 more

The examination of entanglement across various degrees of freedom has been pivotal in augmenting our understanding of fundamental physics, extending to high dimensional quantum states, and promising the scalability of quantum technologies. In this paper, we demonstrate the photon number path entanglement in the frequency domain by implementing a frequency beam splitter that converts the single-photon frequency to another with 50% probability using Bragg scattering four-wave mixing. The two-photon NOON state in a single-mode fiber is generated in the frequency domain, manifesting the two-photon interference with two-fold enhanced resolution compared to that of single-photon interference, showing the outstanding stability of the interferometer. This successful translation of quantum states in the frequency domain will pave the way toward the discovery of fascinating quantum phenomena and scalable quantum information processing.

arXiv:2311.00338•Light Science & Applications•Apr 15, 2024•16 citations

Hong-Ou-Mandel interference in the frequency domain

Chaitali Joshi, Alessandro Farsi, Alexander L. Gaeta

We demonstrate the first observation of Hong-Ou-Mandel interference between two energy correlated single photons of different frequencies with a visibility of 0.68, using Bragg-scattering four wave mixing as the active frequency-domain beamsplitter.

Conference on Lasers and Electro-Optics•Jan 1, 2017•7 citations

Quantum Frequency Translation and Interference of Two Photons of Different Color

Michael G. Raymer, Hayden McGuinness, S. J. van Enk +1 more

Two photons having different colors can exhibit the Hong-Ou-Mandel interference effect if the usual beam splitter is replaced by Bragg scattering via four-wave mixing in an optical fiber, which acts as a frequency shifter.

Frontiers in Optics•Jan 1, 2011•0 citations

Interference of Two Photons of Different Color with Applications to Quantum Computing

Michael G. Raymer, Hayden McGuinness, S. J. van Enk +1 more

Two photons having different colors can undergo the Hong-Ou-Mandel interference effect if the usual beam splitter is replaced by Bragg scattering via four-wave mixing in an optical fiber, which acts as a frequency shifter.

•Jan 1, 2011•0 citations
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±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.
The examination of entanglement across various degrees of freedom has been pivotal in augmenting our understanding of fundamental physics, extending to high dimensional quantum states, and promising the scalability of quantum technologies. In this paper, we demonstrate the photon number path entanglement in the frequency domain by implementing a frequency beam splitter that converts the single-photon frequency to another with 50% probability using Bragg scattering four-wave mixing. The two-photon NOON state in a single-mode fiber is generated in the frequency domain, manifesting the two-photon interference with two-fold enhanced resolution compared to that of single-photon interference, showing the outstanding stability of the interferometer. This successful translation of quantum states in the frequency domain will pave the way toward the discovery of fascinating quantum phenomena and scalable quantum information processing.