Construction of bilinear control Hamiltonians using the series product and quantum feedback

J. E. Gough
Phys. Rev. A 78, 052311 – Published 7 November 2008

Abstract

We show that it is possible to construct closed quantum systems governed by a bilinear Hamiltonian depending on an arbitrary input signal. This is achieved by coupling the system to a quantum input field and performing a feedback of the output field back into the system to cancel out the stochastic effects, with the signal being added to the field between these events and later subtracted. Here we assume the zero time-delay limit between the various connections and operations.

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  • Received 11 August 2008

DOI:https://doi.org/10.1103/PhysRevA.78.052311

©2008 American Physical Society

Authors & Affiliations

J. E. Gough*

  • Institute for Mathematical and Physical Sciences, Aberystwyth University, Ceredigion, SY23 3BZ, United Kingdom

  • *jug@aber.ac.uk

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Vol. 78, Iss. 5 — November 2008

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