On six-photon entangled state emitted from a single third-order parametric down-conversion process

We consider six-photon entangled state emitted from a single third-order parametric down-conversion process. In the regime of weak nonlinearities, we present a symmetry detector which is capable of analyzing the twin-beam six-photon symmetric states. By cascading the symmetry detectors, as an applic...

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Bibliographic Details
Published in:arXiv.org 2020-03
Main Authors: Ying-Qiu, He, Ding, Dong, Gao, Ting, Fengli Yan
Format: Article
Language:English
Subjects:
Conversion
Entangled states
Photon beams
Photons
Symmetry
Online Access:Get full text
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Summary:We consider six-photon entangled state emitted from a single third-order parametric down-conversion process. In the regime of weak nonlinearities, we present a symmetry detector which is capable of analyzing the twin-beam six-photon symmetric states. By cascading the symmetry detectors, as an application, it is shown that one can purify the desired six-photon entangled state from an arbitrary twin-beam six-photon symmetric state. With linear optics we propose a fruitful scheme for exploring a class of multimode-photon entangled states from third-order parametric down-conversion process. Furthermore, we provide a method to generate the six-photon polarization entangled Greenberger-Horne-Zeilinger state based on linear optics and weak nonlinearities.
ISSN:2331-8422
DOI:10.48550/arxiv.2003.00797