Title:	Double-slit interferometry as a lossy beam splitter
Authors:	Sadana, Simanraj Sanders, Barry C Sinha, Urbasi
Keywords:	diffraction optics beam splitters unitary transformations higher-dimensional quantum information processing wavelets double-slit post-selection
Issue Date:	12-Nov-2019
Publisher:	IOP Publishing
Citation:	New Journal of Physics, 2019, Vol.21, p113022
Abstract:	We cast diffraction-based interferometry in the framework of post-selected unitary description towards enabling it as a platform for quantum information processing. We express slit-diffraction as an infinite-dimensional transformation and truncate it to a finite-dimensional transfer matrix by post-selecting modes. Using such a framework with classical fields, a customized double-slit setup is effectively a lossy beam splitter in a post-selected sense. Diffraction optics provides a robust alternative to conventional multi-beam interferometry with scope for miniaturization, and also has applications in matter wave interferometry. In this work, the classical treatment sets the stage for quantization of fields and implementing higher dimensional quantum information processing like that done with other platforms such as orbital angular momentum.
Description:	Open Access
URI:	http://hdl.handle.net/2289/7386
ISSN:	1367-2630(Online)
Alternative Location:	https://ui.adsabs.harvard.edu/abs/2019arXiv190607450S/abstract https://arxiv.org/abs/1906.07450 https://doi.org/10.1088/1367-2630/ab4f46
Copyright:	2019 The Author(s)
Appears in Collections:	Research Papers (LAMP)

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