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Open AccessArticle

A Novel Bulk-Optics Scheme for Quantum Walk with High Phase Stability

1
Physics Department, University of Rome La Sapienza, Piazzale Aldo Moro 5, 00185 Rome, Italy
2
Heinrich-Heine Universität, Institut für Theoretische Physik III, Universitätstraße 1, 40225 Düsseldorf, Germany
*
Author to whom correspondence should be addressed.
Condens. Matter 2019, 4(1), 14; https://doi.org/10.3390/condmat4010014
Received: 30 November 2018 / Revised: 6 January 2019 / Accepted: 17 January 2019 / Published: 18 January 2019
(This article belongs to the Special Issue Quantum Cellular Automata and Quantum Walks)
A novel bulk optics scheme for quantum walks is presented. It consists of a one-dimensional lattice built on two concatenated displaced Sagnac interferometers that make it possible to reproduce all the possible trajectories of an optical quantum walk. Because of the closed loop configuration, the interferometric structure is intrinsically stable in phase. Moreover, the lattice structure is highly configurable, as any phase component perceived by the walker is accessible, and finally, all output modes can be measured at any step of the quantum walk evolution. We report here on the experimental implementation of ordered and disordered quantum walks. View Full-Text
Keywords: quantum optics; quantum walks; photonics quantum optics; quantum walks; photonics
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MDPI and ACS Style

Geraldi, A.; Bonavena, L.D.; Liorni, C.; Mataloni, P.; Cuevas, Á. A Novel Bulk-Optics Scheme for Quantum Walk with High Phase Stability. Condens. Matter 2019, 4, 14.

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