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American Physical Society, Physical Review Letters, 16(104)

DOI: 10.1103/physrevlett.104.160503

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CNOT and Bell-state analysis in the weak-coupling cavity QED regime

Journal article published in 2010 by Cristian Bonato, Florian Haupt, Sumant S. R. Oemrawsingh, Jan Gudat, Dapeng Ding ORCID, Martin P. van Exter, Dirk Bouwmeester
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This paper is available in a repository.

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Abstract

We propose an interface between the spin of a photon and the spin of an electron confined in a quantum dot embedded in a microcavity operating in the weak-coupling regime. This interface, based on spin selective photon reflection from the cavity, can be used to construct a CNOT gate, a multiphoton entangler and a photonic Bell-state analyzer. Finally, we analyze experimental feasibility, concluding that the schemes can be implemented with current technology.