Second-order superposition operations via Hong-Ou-Mandel interference

Details Second-order superposition operations via Hong-Ou-Mandel interference Second-order superposition operations via Hong-Ou-Mandel interference

2012-04-12

arxiv.org/abs/1204.2687v1

Phys. Rev. A 85, 043816 (2012)

Physics

Quantum Physics

published version, 6 pages, 6 figures

Scientific paper

We propose an experimental scheme to implement a second-order nonlocal superposition operation and its variants by way of Hong-Ou-Mandel interference. The second-order coherent operations enable us to generate a NOON state with high particle number in a heralded fashion and also can be used to enhance the entanglement properties of continuous variable states. We discuss the feasibility of our proposed scheme considering realistic experimental conditions such as on-off photodetectors with nonideal efficiency and imperfect single-photon sources.

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