Direct measurement of the system–environment coupling as a tool for understanding decoherence and dynamical decoupling

  title={Direct measurement of the system–environment coupling as a tool for understanding decoherence and dynamical decoupling},
  author={Ido Almog and Yoav Sagi and Goren Gordon and Guy Bensky and Gershon Kurizki and Nir Davidson},
  journal={Journal of Physics B: Atomic, Molecular and Optical Physics},
Decoherence is a major obstacle to any practical implementation of quantum information processing. One of the leading strategies to reduce decoherence is dynamical decoupling—the use of an external field to average out the effect of the environment. The decoherence rate under any control field can be calculated if the spectrum of the coupling to the environment is known. We present a direct measurement of the bath-coupling spectrum in an ensemble of optically trapped ultra-cold atoms, by… 

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