1996•Physical Review ARequires access

Construction of quantum states of the radiation field by discrete coherent-state superpositions

S. Szabó, Петер Адам, József Janszky, P. Domokos

Abstract

An efficient method of quantum state engineering based on discrete superpositions of coherent states is presented. A systematic method is developed for obtaining optimized superpositions from the one-dimensional representation of the desired state. It is shown that superposition of even a small number of coherent states put along a straight line or on a circle in phase space can approximate nonclassical field states with a high degree of accuracy. An experimental scheme is proposed for generating equidistant coherent-state superpositions on a circle with arbitrary coefficients. \textcopyright{} 1996 The American Physical Society.

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Key concepts: Physics, Coherent states, Superposition principle, Equidistant, State (computer science), Quantum mechanics, Quantum state, Field (mathematics)