Showing papers by "Center for Theoretical Physics published in 1996"
01 Jan 1996
TL;DR: In this article, the authors used Monte Carlo simulations to determine the dependence of the transition temperature of layered three-dimensional Josephson-junction arrays on the interlayer coupling ratio α.
Abstract: We have previously used Monte Carlo (MC) simulations to determine the dependence of the transition temperature Te of layered three dimensional Josephson- Junction arrays on the interlayer coupling ratio α . We show that critical currents can also be estimated by MC.
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TL;DR: In this paper, an eight-port homodyne detection apparatus is analyzed in the framework of the operational theory of quantum measurement, and the quantum trigonometry and corresponding phase space Wigner functions are derived for a signal field probed by a classical local oscillator and a squeezed vacuum in the unused port.
Abstract: The eight-port homodyne detection apparatus is analyzed in the framework of the operational theory of quantum measurement. For an arbitrary quantum noise leaking through the unused port of the beam splitter, the positive operator valued measure and the corresponding operational homodyne observables are derived. It is shown that such an eight-port homodyne device can be used to construct the operational quantum trigonometry of an optical field. The quantum trigonometry and the corresponding phase space Wigner functions are derived for a signal field probed by a classical local oscillator and a squeezed vacuum in the unused port.