2007/06/04 by Leonid P. Pryadko, Pryadko, Leonid P., Gregory Quiroz +1
Physics and Astronomy · #FOS: Physical sciences #Quantum Physics (quant-ph) #quant-ph
paper · pdf · doi:10.48550/arxiv.0706.0501
2.5pages Conference proceedings for Nanostructures: Physics and Technology, Novosibirsk (2007). Macros file nano2cmr.sty included
arxiv created 2007/06/04 · arxiv updated 2009/12/01
Refocusing, or dynamical decoupling, is a coherent control technique where the internal dynamics of a quantum system is effectively averaged out by an application of specially designed driving fields. The method has originated in nuclear magnetic resonance, but it was independently discovered in atomic physics as a ``coherent destruction of tunneling''. Present work deals with the analysis of the performance of ``soft'' refocusing pulses and pulse sequences in protecting the coherence of a qubit system coupled to a quantum oscillator.