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Commentary on the decomposition of universal multiport interferometers: how it works in practice

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arxiv 2412.11955 v1 pith:2FICZAND submitted 2024-12-16 quant-ph

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keywords decompositioninterferometersmultiportaccordingachieveaimsapplyapproaches
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The decomposition of multiport interferometers is a fundamental tool in quantum optics and computing. This note aims to serve as a concise reference for performing the decomposition according to the most common design approaches, offering a self-contained treatment with essential mathematical details and practical working examples. Specifically, we provide a clear, self-consistent presentation of all the mathematics required to determine the gate parameters and apply the necessary phase corrections to achieve the desired structure.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

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    Programmable optical interferometers face a trade-off: faster, simpler programming generally means losing up to a factor of n in useful output light energy.

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    quant-ph 2025-06 conditional novelty 5.0 of 10

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