Optimal design for universal multiport interferometers

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Title: Optimal design for universal multiport interferometers
Authors: Clements, WR
Humphreys, PC
Metcalf, BJ
Kolthammer, WS
Walsmley, IA
Item Type: Journal Article
Abstract: 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.
Issue Date: 6-Dec-2016
Date of Acceptance: 7-Oct-2016
URI: http://hdl.handle.net/10044/1/57682
DOI: https://dx.doi.org/10.1364/OPTICA.3.001460
ISSN: 2334-2536
Publisher: Optical Society of America
Start Page: 1460
End Page: 1465
Journal / Book Title: Optica
Volume: 3
Issue: 12
Copyright Statement: Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Sponsor/Funder: Engineering & Physical Science Research Council (E
Funder's Grant Number: EP/K034480/1
Keywords: Science & Technology
Physical Sciences
Publication Status: Published
Open Access location: https://doi.org/10.1364/OPTICA.3.001460
Appears in Collections:Quantum Optics and Laser Science

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