The Stratonovich Formulation of Quantum Feedback Network Rules

Abstract

We express the rules for forming quantum feedback networks using the Stratonovich form of quantum stochastic calculus rather than the Ito, or SLH form. Remarkably the feedback reduction rule implies that we obtain the Schur complement of the matrix of Stratonovich coupling operators where we short out the internal input/output coefficients.

14 pages, 6 figures (The Stratonovich form of the Series Product added in the revision.)

References in corpus (4)

• Quantum Feedback Networks: Hamiltonian Formulation
• Commutativity of the adiabatic elimination limit of fast oscillatory components and the instantaneous feedback limit in quantum feedback networks
• Trapped Modes in Linear Quantum Stochastic Networks with Delays
• Characteristic Operator Functions for Quantum Input-Plant-Output Models & Coherent Control