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European Quantum Electronics Conference (EQEC)

Conditional preparation of a quantum state in the continuous variable regime experimental generation of non classical states from twin beams

Julien Laurat, T. Coudreau, Nicolas Treps, Agnès Maître, Claude Fabre

Published Jan 1, 2003• 0 citations
Publisher

Abstract

First experimental implementation of a conditional preparation of a quantum state in the full continuous variable regime is presented. Continuous measurements are used both for triggering and characterizing the generated state.
DOI
10.1109/eqec.2003.1314239

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A conditional protocol of transferring quantum correlations in a continuous variable regime was experimentally demonstrated. The quantum correlation in two pairs of twin beams, each characterized by intensity-difference squeezing of $7.0\ifmmode\pm\else\textpm\fi{}0.3\phantom{\rule{0.3em}{0ex}}\mathrm{dB}$, was transferred to two initially independent idler beams. The quantum-correlation transfer resulted in intensity-difference squeezing of $4.0\ifmmode\pm\else\textpm\fi{}0.2\phantom{\rule{0.3em}{0ex}}\mathrm{dB}$ between two idler beams. The dependence of the preparation probability and transfer fidelity on the selection bandwidth was also studied.