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Conference on Lasers and Electro-Optics

An approach to the generation of GHZ states by interference of multiple integrated sources on a single chip

Nicola Bergamasco, M. Menotti, John E. Sipe, Marco Liscidini

Published Jan 1, 2017• 0 citations
Publisher

Abstract

We present an approach to the generation of path-encoded Greenberger-Horne-Zeilinger states in a single chip, by interfering four integrated microring resonators in which degenerate spontaneous four-wave mixing takes place.
DOI
10.1364/cleo_at.2017.jw2a.22

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We study the generation of Greenberger-Horne-Zeilinger (GHZ) states of three path-encoded photons. Inspired by the seminal work of Bouwmeester et al. [1] on polarization-entangled GHZ states, we find a corresponding path representation for the photon states of an optical circuit, identify the elements required for the state generation, and propose a possible implementation of our strategy. Besides the practical advantage of employing an integrated system that can be fabricated with proven lithographic techniques, our example suggests that it is possible to enhance the generation efficiency by using microring resonators.
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