Photon sorters and QND detectors using single photon emitters - Quantum PhysicsReport as inadecuate




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Abstract: We discuss a new method for realizing number-resolving and non-demolitionphoto detectors by strong coupling of light to individual single photonemitters, which act as strong optical non-linearities. As a specificapplication we show how these elements can be integrated into an error-proofBell state analyzer, whose efficiency exceeds the best possible performancewith linear optics even for a modest atom-field coupling. The methods areerror-proof in the sense that every detection event unambiguously projects thephoton state onto a Fock or Bell state.



Author: D. Witthaut, M. D. Lukin, A. S. Sørensen

Source: https://arxiv.org/







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