Quantum theory for Josephson-junction circuits
M. J. Werner, P. D. Drummond
DOI 10.1103/PhysRevA.43.6414 · Physical Review A
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Abstract
Previous work [B. Yurke, J. Opt. Soc. Am. B 4, 1557 (1987)] published on quantizing Josephson parametric amplifiers has involved a constrained Lagrangian. This paper proposes a simpler, consistent Hamiltonian approach to quantizing a Josephson parametric amplifier, without constriants.
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