An Optimal Design for Universal Multiport Interferometers

Universal multiport interferometers, which can be programmed to implement any linear transformation between multiple channels, are emerging as a powerful tool for both classical and quantum photonics. These interferometers are typically composed of a regular mesh of beam splitters and phase shifters...

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Main Authors: Clements, W, Humphreys, P, Metcalf, B, Kolthammer, W, Walmsley, I
Format: Journal article
Published: Optical Society of America 2016
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author Clements, W
Humphreys, P
Metcalf, B
Kolthammer, W
Walmsley, I
author_facet Clements, W
Humphreys, P
Metcalf, B
Kolthammer, W
Walmsley, I
author_sort Clements, W
collection OXFORD
description Universal multiport interferometers, which can be programmed to implement any linear transformation between multiple channels, are emerging as a powerful tool for both classical and quantum photonics. These interferometers are typically composed of a regular mesh of beam splitters and phase shifters, allowing for straightforward fabrication using integrated photonic architectures and ready scalability. The current, standard design for universal multiport interferometers is based on work by Reck et al (Phys. Rev. Lett. 73, 58, 1994). We demonstrate a new design for universal multiport interferometers based on an alternative arrangement of beam splitters and phase shifters, which outperforms that by Reck et al. Our design requires half the optical depth of the Reck design and is significantly more robust to optical losses.
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spelling oxford-uuid:12001441-51c7-4bb7-913c-18a1c208ed2e2022-03-26T10:05:24ZAn Optimal Design for Universal Multiport InterferometersJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:12001441-51c7-4bb7-913c-18a1c208ed2eSymplectic Elements at OxfordOptical Society of America2016Clements, WHumphreys, PMetcalf, BKolthammer, WWalmsley, IUniversal multiport interferometers, which can be programmed to implement any linear transformation between multiple channels, are emerging as a powerful tool for both classical and quantum photonics. These interferometers are typically composed of a regular mesh of beam splitters and phase shifters, allowing for straightforward fabrication using integrated photonic architectures and ready scalability. The current, standard design for universal multiport interferometers is based on work by Reck et al (Phys. Rev. Lett. 73, 58, 1994). We demonstrate a new design for universal multiport interferometers based on an alternative arrangement of beam splitters and phase shifters, which outperforms that by Reck et al. Our design requires half the optical depth of the Reck design and is significantly more robust to optical losses.
spellingShingle Clements, W
Humphreys, P
Metcalf, B
Kolthammer, W
Walmsley, I
An Optimal Design for Universal Multiport Interferometers
title An Optimal Design for Universal Multiport Interferometers
title_full An Optimal Design for Universal Multiport Interferometers
title_fullStr An Optimal Design for Universal Multiport Interferometers
title_full_unstemmed An Optimal Design for Universal Multiport Interferometers
title_short An Optimal Design for Universal Multiport Interferometers
title_sort optimal design for universal multiport interferometers
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