Quantum nondemolition measurement of two-photon Bell-state and three-photon Greenberger-Horne-Zeilinger-state based on weak nonlinearities | Zendy

Dong Ding | Zendy; Yan Feng-Li | Zendy

Open Access

Quantum nondemolition measurement of two-photon Bell-state and three-photon Greenberger-Horne-Zeilinger-state based on weak nonlinearities

Author(s) -

Dong Ding,

Yan Feng-Li

Publication year - 2013

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.62.100304

Subject(s) - physics , photon , beam splitter , bell state , quantum mechanics , state (computer science) , greenberger–horne–zeilinger state , spectrum analyzer , quantum optics , bell test experiments , quantum , w state , quantum entanglement , optics , laser , computer science , algorithm

The scheme for quantum nondemolition measurement of two-photon Bell-state and three-photon Greenberger-Horne-Zeilinger (GHZ)-state is proposed based on weak nonlinearities and linear-optics elements. We first describe a scheme of the symmetry analyzer for two-photon Bell-state by using beam splitters and cross-Kerr nonlinear medium. According to this symmetry analyzer for two-photon Bell-state and the controlled-NOT gates we construct a three-photon state analyzer which can completely and nondestructively discriminate eight three-photon GHZ states.

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