Journal
JOURNAL OF MODERN OPTICS
Volume 51, Issue 16-18, Pages 2449-2460Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09500340408231803
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Quantum error prevention strategies will be required to produce a scalable quantum computing device and are of central importance in this regard. Progress in this area has been quite rapid in the past few years. In order to provide an overview of the achievements in this area, we discuss the three major classes of error prevention strategies, the abilities of these methods and the shortcomings. We then discuss the combinations of these strategies which have recently been proposed in the literature. Finally, we present recent results in reducing errors on encoded subspaces using decoupling controls. We show how to generally remove mixing of an encoded subspace with external states (termed leakage errors) using decoupling controls. Such controls are known as 'leakage elimination operations' or 'LEOs'.
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