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

Su Yong Lee, Hyunchul Nha

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27 Citations (Scopus)


We propose an experimental scheme to implement a second-order nonlocal superposition operation a 2+eiφb 2 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.

Original languageEnglish
Article number043816
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number4
Publication statusPublished - 10 Apr 2012


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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