Optical Fock-state synthesizer

Abstract

We suggest a tunable optical device to synthesize Fock states and their superpositions starting from a coherent source. The scheme involves an avalanche triggering photodetector and a ring cavity coupled to a traveling wave through a cross-Kerr medium. Low quantum efficiency at the photodetector improves the synthesizing quality at the expense of reducing the synthesizing rate.

Revtex, 5 pages, 4 figs, submitted PRL 03Feb99, accepted PRA 18jan00

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