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Commutativity of the adiabatic elimination limit of fast oscillatory components and the instantaneous feedback limit in quantum feedback networks

Gough, John E.; Nurdin, Hendra I.; Wildfeuer, Sebastian

Description

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...[Show more]

CollectionsANU Research Publications
Date published: 2010-11-09
Type: Journal article
URI: http://hdl.handle.net/1885/16982
Source: Journal of Mathematical Physics, 51(12), pp. 123518-1--123518-25 (2010)
DOI: 10.1063/1.3520513

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