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Summary form only given. Reconstruction of quantum states of the electromagnetic field has become an important technique in quantum optics. Tomographic algorithms to reconstruct the Wigner function and direct density matrix measurement schemes both provide a full representation of a quantum state. We are interested in the time evolution of a cavity quantum electrodynamic (QED) system that, after a...
Summary form only given. Squeezing has traditionally been measured with a homodyne detector whose photocurrent output is frequency analyzed to quantify the noise reduction below the standard quantum limit. This measurement technique suffers from detection and propagation efficiencies. It seldom permits the complete reconstruction of the spectrum particularly when the frequency range is large. We have...
Summary form only given. The squeezing of an optical field is normally observed in the frequency domain using balanced homodyne detection to measure the fluctuation variance of a selected quadrature amplitude. The scheme amounts to a measurement of sub-Poissonian photon statistics and is sensitive to efficiencies as any such unconditional measurement is. Conditional measurements are independent of...
This paper describes knowledge representation in a fuzzy logic controller (FLC) with respect to the placement of an optimal number of linguistic descriptive sets. The number of sets is shown to be optimal, any less and the information in an expert scheme is not conveyed, and any more introducing redundancy. The basic theory of optimal set placement is described for a SISO controller. The extension...
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