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

Hong-Ou-Mandel Interference between Transverse Spatial Waveguide Modes

Aseema Mohanty, Mian Zhang, Sven Ramelow, P. Nussenzveig, Michal F. Lipson

Published Jan 1, 2015• 0 citations
Publisher

Abstract

We demonstrate Hong-Ou-Mandel interference between different transverse spatial modes in a silicon nitride multimode waveguide. We show over 90% visibility between modes, providing a promising route for scalable on-chip quantum information processing.
DOI
10.1364/cleo_qels.2015.ftu4a.5

Related papers

On-chip Quantum Interference of Transverse Modes with Inverse Designed Structures

Jamika Ann Roque, Daniel Peace, Simon White +5 more

Transverse spatial modes have become an increasingly popular degree-of-freedom for encoding quantum information owing to the compact implementation when compared to others such as path. Here we present the demonstration of two photon Hong-Ou-Mandel interference between the different transverse modes in a multimode silicon photonic chip using a compact inverse designed beam splitter with up to 99.56 0.64% interference visibility. We achieve high visibilities across both multiple copies of ±the same design and among different designs. This work demonstrates the potential of inverse designed devices for quantum information processing with transverse spatial modes.

Frontiers in Optics•Jan 1, 2024•0 citations

Near-unity quantum interference of transverse spatial modes in an ultra-compact inverse-designed photonic device

Jamika Ann Roque, Daniel Peace, Simon White +6 more

Transverse spatial modes as a degree of freedom is an untapped resource for scaling up integrated photonic quantum computing. To be practically useful for improving scalability, reliable and high-visibility quantum interference between transverse spatial modes on-chip needs to be demonstrated. We show repeatable quantum interference using inverse-designed transverse mode beam splitters that have an ultra-compact footprint of 3 × 3 μm2—the smallest transverse mode beam splitters for 1550 nm photons to date. We measure a Hong–Ou–Mandel visibility of up to 99.56% ± 0.62% from a single device, with an average visibility across three identical devices of 99.38% ± 0.41%, indicating a high degree of reproducibility. Our work demonstrates that inverse-designed components are suitable for engineering quantum interference on-chip of multimode devices, paving the way for future compact integrated quantum photonic devices that exploit transverse spatial modes as a degree of freedom for high-dimensional quantum information.

APL Photonics•Feb 1, 2026•0 citations

Near-infrared Hong-Ou-Mandel interference on a silicon quantum photonic chip

Xinan Xu, Zhenda Xie, Jiangjun Zheng +9 more

Near-infrared Hong-Ou-Mandel quantum interference is observed in silicon nanophotonic directional couplers with raw visibilities on-chip at 90.5%. Spectrally-bright 1557-nm two-photon states are generated in a periodically-poled KTiOPO₄ waveguide chip, serving as the entangled photon source and pumped with a self-injection locked laser, for the photon statistical measurements. Efficient four-port coupling in the communications C-band and in the high-index-contrast silicon photonics platform is demonstrated, with matching theoretical predictions of the quantum interference visibility. Constituents for the residual quantum visibility imperfection are examined, supported with theoretical analysis of the sequentially-triggered multipair biphoton, towards scalable high-bitrate quantum information processing and communications. The on-chip HOM interference is useful towards scalable high-bitrate quantum information processing and communications.

arXiv:1212.0567•Optics Express•Feb 21, 2013•16 citations

On-chip qudit quantum information using transverse modes

Jacquiline Romero, Daniel Peace, Tavshabad Kaur +8 more

In this talk, I will give a brief introduction to photonic qudits, focusing on the transverse mode of photons. I will present some of our current efforts towards end-to-end qudit quantum information processing on-chip using the transverse modes, from generation of photons to their measurement. I will show some results on photon-pair generation on-chip via spontaneous four-wave mixing. I will show some of the components that we have fabricated based on photonic inverse design. We evaluate the performance of our devices via a Hong-Ou-Mandel interference on-chip, where we observed near-unity interference visibility. Our results offer some inspiration for realising photonic qudit quantum computation using transverse modes, whether on their own or for augmenting current approaches.

Complex Light and Optical Forces•Mar 5, 2026•0 citations

Multimode Hong-Ou-Mandel Interferometry

Walborn, S P, Nogueira, W A T, De Oliveira, A N +2 more

We review some recent experiments based upon multimode two-photon interference of photon pairs created by spontaneous parametric down-conversion. The new element provided by these experiments is the inclusion of the transverse spatial profiles of the pump, signal and idler fields. We discuss multimode Hong-Ou-Mandel interference, and show that the transverse profile of the pump beam can be manipulated in order to control two-photon interference. We present the basic theory and experimental results as well as several applications to the field of quantum information.

•Dec 3, 2004•4 citations

MULTIMODE HONG–OU–MANDEL INTERFEROMETRY

S. P. WALBORN, W. A. T. NOGUEIRA, A. N. de OLIVEIRA +2 more

We review some recent experiments based upon multimode two-photon interference of photon pairs created by spontaneous parametric down-conversion. The new element provided by these experiments is the inclusion of the transverse spatial profiles of the pump, signal and idler fields. We discuss multimode Hong–Ou–Mandel interference, and show that the transverse profile of the pump beam can be manipulated in order to control two-photon interference. We present the basic theory and experimental results as well as several applications to the field of quantum information.

arXiv:quant-ph/0412022•Modern Physics Letters B•Jan 20, 2005•8 citations
Transverse spatial modes have become an increasingly popular degree-of-freedom for encoding quantum information owing to the compact implementation when compared to others such as path. Here we present the demonstration of two photon Hong-Ou-Mandel interference between the different transverse modes in a multimode silicon photonic chip using a compact inverse designed beam splitter with up to 99.56 0.64% interference visibility. We achieve high visibilities across both multiple copies of ±the same design and among different designs. This work demonstrates the potential of inverse designed devices for quantum information processing with transverse spatial modes.
Transverse spatial modes as a degree of freedom is an untapped resource for scaling up integrated photonic quantum computing. To be practically useful for improving scalability, reliable and high-visibility quantum interference between transverse spatial modes on-chip needs to be demonstrated. We show repeatable quantum interference using inverse-designed transverse mode beam splitters that have an ultra-compact footprint of 3 × 3 μm2—the smallest transverse mode beam splitters for 1550 nm photons to date. We measure a Hong–Ou–Mandel visibility of up to 99.56% ± 0.62% from a single device, with an average visibility across three identical devices of 99.38% ± 0.41%, indicating a high degree of reproducibility. Our work demonstrates that inverse-designed components are suitable for engineering quantum interference on-chip of multimode devices, paving the way for future compact integrated quantum photonic devices that exploit transverse spatial modes as a degree of freedom for high-dimensional quantum information.
Near-infrared Hong-Ou-Mandel quantum interference is observed in silicon nanophotonic directional couplers with raw visibilities on-chip at 90.5%. Spectrally-bright 1557-nm two-photon states are generated in a periodically-poled KTiOPO₄ waveguide chip, serving as the entangled photon source and pumped with a self-injection locked laser, for the photon statistical measurements. Efficient four-port coupling in the communications C-band and in the high-index-contrast silicon photonics platform is demonstrated, with matching theoretical predictions of the quantum interference visibility. Constituents for the residual quantum visibility imperfection are examined, supported with theoretical analysis of the sequentially-triggered multipair biphoton, towards scalable high-bitrate quantum information processing and communications. The on-chip HOM interference is useful towards scalable high-bitrate quantum information processing and communications.
In this talk, I will give a brief introduction to photonic qudits, focusing on the transverse mode of photons. I will present some of our current efforts towards end-to-end qudit quantum information processing on-chip using the transverse modes, from generation of photons to their measurement. I will show some results on photon-pair generation on-chip via spontaneous four-wave mixing. I will show some of the components that we have fabricated based on photonic inverse design. We evaluate the performance of our devices via a Hong-Ou-Mandel interference on-chip, where we observed near-unity interference visibility. Our results offer some inspiration for realising photonic qudit quantum computation using transverse modes, whether on their own or for augmenting current approaches.
We review some recent experiments based upon multimode two-photon interference of photon pairs created by spontaneous parametric down-conversion. The new element provided by these experiments is the inclusion of the transverse spatial profiles of the pump, signal and idler fields. We discuss multimode Hong-Ou-Mandel interference, and show that the transverse profile of the pump beam can be manipulated in order to control two-photon interference. We present the basic theory and experimental results as well as several applications to the field of quantum information.
We review some recent experiments based upon multimode two-photon interference of photon pairs created by spontaneous parametric down-conversion. The new element provided by these experiments is the inclusion of the transverse spatial profiles of the pump, signal and idler fields. We discuss multimode Hong–Ou–Mandel interference, and show that the transverse profile of the pump beam can be manipulated in order to control two-photon interference. We present the basic theory and experimental results as well as several applications to the field of quantum information.