Physics – Quantum Physics
Scientific paper
2010-11-09
Journal of Mathematical Physics, 51(12), pp. 123518-1--123518-25 (2010)
Physics
Quantum Physics
38 pages, 10 figures, minor typos corrected and minor editorial changes. Published in Journal of Mathematical Physics
Scientific paper
10.1063/1.3520513
We show that, for arbitrary quantum feedback networks consisting of several quantum mechanical components connected by quantum fields, the limit of adiabatic elimination of fast oscillator modes in the components and the limit of instantaneous transmission along internal quantum field connections commute. The underlying technique is to show that both limits involve a Schur complement procedure. The result shows that the frequently used approximations, for instance to eliminate strongly coupled optical cavities, are mathematically consistent.
Gough John E.
Nurdin Hendra I.
Wildfeuer Sebastian
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