Universal Greenberger-Horne-Zeilinger-state analyzer based on two-photon polarization parity detection
Qian, J. Feng, X.-L. Gong, S.-Q.
Qian, J.
Gong, S.-Q.
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Abstract
We present a universal analyzer for the three-particle Greenberger-Horne- Zeilinger (GHZ) states with quantum nondemolition parity detectors and linear-optics elements. In our scheme, all of the three-photon GHZ states can be discriminated with nearly unity probability in the regime of weak nonlinearity feasible at the present state of the art experimentally. We also show that our scheme can be easily extended to the analysis of the multi-particle GHZ states. © 2005 The American Physical Society.
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Physical Review A - Atomic, Molecular, and Optical Physics
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Date
2005-11
DOI
10.1103/PhysRevA.72.052308
Type
Article