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Deutsche Physikalische Gessellschaft IOP Institute of Physics

Quantum learning by measurement and feedback

S Gammelmark and K Mølmer

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We investigate an approach to quantum computing in which quantum gate strengths are parametrized by quantum degrees of freedom. The capability of the quantum computer to perform desired tasks is monitored by measurements of the output and gradually improved by successive feedback modifications of the coupling strength parameters. Our proposal uses only information available in an experimental implementation and is demonstrated with simulations on search and factoring algorithms.


PACS

03.67.Lx Quantum computation architectures and implementations

07.05.Mh Neural networks, fuzzy logic, artificial intelligence

Subjects

Computational physics

Instrumentation and measurement

Quantum information and quantum mechanics

Dates

Issue 3 (March 2009)

Received 26 August 2008

Published 12 March 2009



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