Dynamical Suppression of 1/f Noise Processes in Qubit Systems

Phys. Rev. Lett. 92, 117905 – Published 18 March 2004
Lara Faoro and Lorenza Viola

Abstract

We investigate the capability of dynamical decoupling techniques to reduce decoherence from a realistic environment generating 1/f noise. The predominance of low frequency modes in the noise profile allows for decoherence scenarios where relatively slow control rates suffice for a drastic improvement. However, the actual figure of merit is very sensitive to the details of the dynamics, with decoupling performance which may deteriorate for non-Gaussian noise and/or high frequency working points. Our results are promising for robust solid-state qubits and beyond.

DOI: http://dx.doi.org/10.1103/PhysRevLett.92.117905

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  • Received 18 September 2003
  • Published 18 March 2004

© 2004 The American Physical Society

Authors & Affiliations

Lara Faoro1,* and Lorenza Viola2,†

  • 1Institute for Scientific Interchange Foundation, Viale Settimio Severo 65, 10133 Torino, Italy
  • 2Los Alamos National Laboratory, Mail Stop B256, Los Alamos, New Mexico 87545, USA

  • *Electronic address: faoro@isiosf.isi.it
  • Electronic address: lviola@lanl.gov

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