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13 March 2024 Path-encoded multidimensional entanglement distribution between integrated photonic devices through multi-core fibre
Molly Thomas, Daniel Llewellyn, Benjamin Slater, Caterina Vigliar, Beatrice da Lio, Stefano Paesani, Döndü Sahin, Massimo Borghi, John Rarity, Leif K. Oxenløwe, Karsten Rottwitt, Mark Thompson, Yunhong Ding, Jianwei Wang, Davide Bacco, Jorge Barreto
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Proceedings Volume PC12911, Quantum Computing, Communication, and Simulation IV; PC129111A (2024) https://doi.org/10.1117/12.3000037
Event: SPIE Quantum West, 2024, San Francisco, California, United States
Abstract
Here we present the experimental distribution of four-dimensional entangled qudits between integrated photonic devices. Qudits offer advantages over qubits such as higher information capacity, and improved noise robustness. Integrated photonics allows for the reliable preparation and manipulation of large-scale entangled quantum states on a single device, with outstanding phase stability. However, reliable transmission of these states between devices, integrated or otherwise, has been a challenge, mainly due to the difficulty of maintaining phase stability between multiple optical channels. We implement an active phase stabilisation algorithm, utilising the same circuitry as for the quantum states, enabling stable distribution of qudits.
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Molly Thomas, Daniel Llewellyn, Benjamin Slater, Caterina Vigliar, Beatrice da Lio, Stefano Paesani, Döndü Sahin, Massimo Borghi, John Rarity, Leif K. Oxenløwe, Karsten Rottwitt, Mark Thompson, Yunhong Ding, Jianwei Wang, Davide Bacco, and Jorge Barreto "Path-encoded multidimensional entanglement distribution between integrated photonic devices through multi-core fibre", Proc. SPIE PC12911, Quantum Computing, Communication, and Simulation IV, PC129111A (13 March 2024); https://doi.org/10.1117/12.3000037
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KEYWORDS
Multicore fiber
Integrated photonics
Quantum entanglement
Quantum devices
Channel projecting optics
Quantum channels
Quantum states
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