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. 2007 Mar 9;98(10):100504.
doi: 10.1103/PhysRevLett.98.100504. Epub 2007 Mar 9.

Keeping a quantum bit alive by optimized pi-pulse sequences

Götz S Uhrig  1
Affiliations

Keeping a quantum bit alive by optimized pi-pulse sequences

Götz S Uhrig. Phys Rev Lett. .

Erratum in

  • Phys Rev Lett. 2011 Mar 25;106(12):129901

Abstract

A general strategy to maintain the coherence of a quantum bit is proposed. The analytical result is derived rigorously including all memory and backaction effects. It is based on an optimized pi-pulse sequence for dynamic decoupling extending the Carr-Purcell-Meiboom-Gill cycle. The optimized sequence is very efficient, in particular, for strong couplings to the environment.

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