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Programmable quantum photonic networks

Natalia Herrera Valencia, Suraj Goel, Saroch Leedumrongwatthanakun +4 more

We implement a programmable photonic network that harnesses the large mode-mixing process inside a multi-mode fibre to distribute and swap entanglement between multiple parties.

Jan 1, 20240 citations

Programmable High-Dimensional Quantum Circuits in Space and Time

Suraj Goel, Saroch Leedumrongwatthanakun, Natalia Herrera Valencia +7 more

We harness the complex mixing process inside a commercial multi-mode fibre to program high-dimensional linear optical circuits for photonic qudits encoded in transverse space and time-of-arrival, and demonstrate their use for high-dimensional entanglement certification.

Quantum 2.0 Conference and ExhibitionJan 1, 20240 citations

A complex media platform for quantum networking using structured light

Natalia Herrera Valencia, Annameng Ma, Suraj Goel +5 more

We harness the complex light-scattering process inside a multi-mode fibre to implement reconfigurable circuits for transverse spatial photonic modes. With this architecture, we have demonstrated high-dimensional quantum gates to manipulate spatial-mode entanglement in the bipartite and multipartite regimes, enabling a multiplexed programmable network that distributes and swaps entanglement between 4 parties using structured light.

Complex Light and Optical ForcesMar 19, 20250 citations

Programmable linear quantum networks with a multimode fibre

Saroch Leedumrongwatthanakun, Luca Innocenti, Hugo Defienne +4 more

arXiv:1902.10678Nature PhotonicsDec 2, 2019113 citations

An entanglement-based wavelength-multiplexed quantum communication network

Sören Wengerowsky, Siddarth Koduru Joshi, Fabian Steinlechner +2 more

arXiv:1801.06194NatureDec 1, 2018429 citations

A large-scale reconfigurable multiplexed quantum photonic network

Natalia Herrera Valencia, Annameng Ma, Suraj Goel +5 more

The distribution of entanglement in quantum networks will enable the next generation of technologies in quantum-secured communications, distributed quantum computing and sensing. Future quantum networks will require dense connectivity, allowing multiple users to share entanglement in a reconfigurable and multiplexed manner, while long-distance connections are established through the teleportation of entanglement, or entanglement swapping. Although several recent works have demonstrated fully connected, local multi-user networks based on multiplexing, extending such networks to a global network architecture of interconnected local networks remains an outstanding challenge. Here we demonstrate the next step in the evolution of multiplexed quantum networks-a prototype global reconfigurable network in which entanglement is routed and teleported in a flexible and multiplexed manner between two local four-user networks. At the heart of our network is a programmable 8 × 8-dimensional multi-port circuit that harnesses the natural mode-mixing process inside of a multi-mode fibre to implement on-demand high-dimensional operations on two independent photons carrying eight transverse-spatial modes. Our circuit design allows us to break away from the limited planar geometry and bypass the control and fabrication challenges of conventional integrated photonic platforms. Our demonstration highlights the potential of this architecture for enabling large-scale, global quantum networks that offer versatile connectivity while being fully compatible with an existing communications infrastructure.The distribution of entanglement in quantum networks will enable the next generation of technologies in quantum-secured communications, distributed quantum computing and sensing. Future quantum networks will require dense connectivity, allowing multiple users to share entanglement in a reconfigurable and multiplexed manner, while long-distance connections are established through the teleportation of entanglement, or entanglement swapping. Although several recent works have demonstrated fully connected, local multi-user networks based on multiplexing, extending such networks to a global network architecture of interconnected local networks remains an outstanding challenge. Here we demonstrate the next step in the evolution of multiplexed quantum networks-a prototype global reconfigurable network in which entanglement is routed and teleported in a flexible and multiplexed manner between two local four-user networks. At the heart of our network is a programmable 8 × 8-dimensional multi-port circuit that harnesses the natural mode-mixing process inside of a multi-mode fibre to implement on-demand high-dimensional operations on two independent photons carrying eight transverse-spatial modes. Our circuit design allows us to break away from the limited planar geometry and bypass the control and fabrication challenges of conventional integrated photonic platforms. Our demonstration highlights the potential of this architecture for enabling large-scale, global quantum networks that offer versatile connectivity while being fully compatible with an existing communications infrastructure.

arXiv:2501.07272Nature PhotonicsNov 26, 20256 citations

A Multiplexed Programmable Quantum Photonic Network

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A Multiplexed Programmable Quantum Photonic Network

Abstract

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