Photon adding and subtracting and Schroedinger-cat generation in conditional output measurement on a beam splitter
D. -G. Welsch, M. Dakna, L. Knoll, T. Opatrny
Abstract
The problem of photon adding and subtracting is studied, using conditional output measurement on a beam splitter. It is shown that for various classes of states the corresponding photon-added and -subtracted states can be prepared. Analytical results are presented, with special emphasis on photon-added and -subtracted squeezed vacuum states, which are found to represent two different types of Schroedinger-cat-like states. Effects of realistic photocounting and Fock-state preparation are discussed.
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