An interleaved sampling scheme for the characterization of single qubit dynamics

  • Authors:

  • Jason F. Ralph;Joshua Combes;Howard M. Wiseman

  • Affiliations:

  • Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool, UK L69 3GJ;Centre for Quantum Dynamics, Griffith University, Brisbane, Australia 4111 and The Department of Physics and Astronomy, University of New Mexico, Albuquerque, USA 87131;Centre for Quantum Dynamics, Griffith University, Brisbane, Australia 4111

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2012

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Abstract

In this paper, we demonstrate that interleaved sampling techniques can be used to characterize the Hamiltonian of a qubit and its environmental decoherence rate. The technique offers a significant advantage in terms of the number of measurements that are required to characterize a qubit. When compared to the standard Nyquist---Shannon sampling rate, the saving in the total measurement time for the interleaved method is approximately proportional to the ratio of the sample rates.