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arXiv:1101.3855 · Physical Review A

Photon-added coherent states in parametric down-conversion

S. Sivakumar

Published Mar 7, 2011• 13 citations
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Abstract

Photon-added coherent states have been realized in optical parametric down-conversion by Zavatta et al. [Science 306, 660 (2004)]. In this report, it is established that the states generated in the process are ideal photon-added coherent states. It is shown that the scheme can generate higher-order photon-added coherent states. A comparative study of the down-conversion process and atom-cavity interaction in generating the photon-added coherent states is presented.

DOI
10.1103/physreva.83.035802

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Photon-added coherent states have been realized in optical parametric down-conversion by Zavatta et al. [Science 306, 660 (2004)]. In this report, it is established that the states generated in the process are ideal photon-added coherent states. It is shown that the scheme can generate higher-order photon-added coherent states. A comparative study of the down-conversion process and atom-cavity interaction in generating the photon-added coherent states is presented.
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Scheme for conditional generation of photon-added coherent state and optical entangled WWW state
We propose a simple scheme to generate an arbitrary photon-added coherent state of a travelling optical field by using only a set of degenerate parametric amplifiers and single-photon detectors. Particularly, when the single-photon-added coherent state (SPACS) is observed by following, e.g., the novel technique of Zavatta \emph{etal.et al.etal.} (Science 306, 660 (2004)), we also obtain the generalized optical entangled WWW state. Finally, a qualitative analysis of possible losses in our scheme is given.
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