Fast reconstruction of programmable interferometers with intensity-only measurements

Author:

Bantysh B I,Chernyavskiy A Yu,Fldzhyan S A,Bogdanov Yu I

Abstract

Abstract Programmable linear optical interferometers are promising for classical and quantum applications. Their integrated design makes it possible to create more scalable and stable devices. To use them in practice, one has to reconstruct the whole device model taking the manufacturing errors into account. The inability to address individual interferometer elements complicates the reconstruction problem. A naive approach is to train the model via some complex optimization procedure. A faster optimization-free algorithm has been recently proposed (Bantysh et al 2023 Opt. Express 31 16729–42). However, it requires the full transfer matrix tomography while a more practical setup measures only the fields intensities at the interferometer output. In this paper, we propose the modification of the fast algorithm, which uses additional set of interferometer configurations in order to reconstruct the model in the case of intensity-only measurements. We show that it performs slightly worse than the original fast algorithm but it is more practical and still does not require intensive numerical optimization.

Publisher

IOP Publishing

Subject

Physics and Astronomy (miscellaneous),Instrumentation

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Redutsirovannaya kharakterizatsiya perestraivaemykh lineyno-opticheskikh integral'nykh skhem;Письма в Журнал экспериментальной и теоретической физики;2024-12-15

2. Reduced Characterization of Tunable Linear Photonic Integrated Circuits;JETP Letters;2024-06

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