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Photonic Quantum Computing

Optimal design of error-tolerant reprogrammable multiport interferometers

arXiv
Authors: Suren A. Fldzhyan, Mikhail Yu. Saygin, Sergei P. Kulik

Year

2019

Paper ID

15217

Status

Preprint

Abstract Read

~2 min

Abstract Words

100

Citations

N/A

Abstract

Photonic information processing demands programmable multiport interferometers capable of implementing arbitrary transfer matrices, for which planar meshes of error-sensitive Mach-Zehnder interferometers are usually exploited. We propose an alternative design that uses a single static beam-splitter and a variable phase shift as the building block. The design possesses superior resilience to manufacturing errors and losses without extra elements added into the scheme. Namely, the power transmissivities of the static BSs can take arbitrary values in the range from approx{}1/2 to approx{}4/5. We show that the fraction of transfer matrices non-implementable by the interferometers of our design diminishes rapidly with their size.

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  • Photonic information processing demands programmable multiport interferometers capable of implementing arbitrary transfer matrices, for which planar meshes of error-sensitive...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1910.13001 [2] arXiv https://arxiv.org/abs/1910.13001 [3] Publisher https://arxiv.org/abs/1910.13001

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