arXiv:quant-ph/0602217 · IEEE Conference on Decision and Control (CDC)

Control of decoherence in open quantum systems using feedback

N. Ganesan, Tzyh-Jong Tarn

Published Oct 4, 2006• 3 citations

Abstract

Quantum feedback is assuming increasingly im- portant role in quantum control and quantum information processing. In this work we analyze the application of such feedback techniques in eliminating decoherence in open quan- tum systems. In order to apply such system theoretic methods we first analyze the invariance properties of quadratic forms which corresponds to expected value of a measurement and present conditions for decouplability of measurement outputs of such time-varying open quantum systems from environmental effects.

DOI: 10.1109/cdc.2005.1582193

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