Complexity-energy trade-off in programmable unitary interferometers

Fuente: arXiv
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Auteurs principaux: Nemkov, Nikita A., Straupe, Stanislav S.
Format: Preprint
Publié: 2025
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author Nemkov, Nikita A.
Straupe, Stanislav S.
author_facet Nemkov, Nikita A.
Straupe, Stanislav S.
contents Coherent multiport interferometers are a promising approach to realize matrix multiplication in integrated photonics. However, most known architectures - such as MZI and beamsplitter meshes, as well as more general interferometers - suffer from complicated procedures for mapping the matrix elements of the desired transformation to specific phaseshifts in the device. We point out that the high programming complexity is intrinsic, rather than accidental. At the same time, we argue that interferometers admitting efficient programming algorithms in general yield a much lower useful output energy, which ultimately limits their accuracy and energy efficiency.
format Preprint
id arxiv_https___arxiv_org_abs_2507_22972
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Complexity-energy trade-off in programmable unitary interferometers
Nemkov, Nikita A.
Straupe, Stanislav S.
Optics
Emerging Technologies
Coherent multiport interferometers are a promising approach to realize matrix multiplication in integrated photonics. However, most known architectures - such as MZI and beamsplitter meshes, as well as more general interferometers - suffer from complicated procedures for mapping the matrix elements of the desired transformation to specific phaseshifts in the device. We point out that the high programming complexity is intrinsic, rather than accidental. At the same time, we argue that interferometers admitting efficient programming algorithms in general yield a much lower useful output energy, which ultimately limits their accuracy and energy efficiency.
title Complexity-energy trade-off in programmable unitary interferometers
topic Optics
Emerging Technologies
url https://arxiv.org/abs/2507.22972