Erratum: Dynamical suppression of decoherence by phase kicks: Master equation approach [Phys. Rev. A76, 022307 (2007)]
Masashi Ban, Sachiko Kitajima, Fumiaki Shibata · Physical Review A · 2008
Our paper gave a generalization to non-pulses of our results for the usual -pulse method to control decoherence, as published almost simultaneously in Ref. ͓1͔.The purpose of this Erratum is to acknowledge that large parts of our paper reproduced the material contained in Ref. ͓1͔ for the -pulse case, without giving a proper citation for the origin of the material, and so we wish to set the record straight by providing an appropriate citation and revised text.The corrections we would like to make are to replace the Abstract and the Introduction of our previous paper with the following, where the reference numbers correspond to those of our paper.We also add here three related references, ͓2-4͔, which concern the dynamical decoupling.With the use of time-convolutionless ͑TCL͒ quantum master equation in nonequilibrium statistical mechanics, the usual -pulse method is generalized to non--pulse case in controlling decoherence.The non-Markovian quantum master equation gives a firm starting point to represent a fluctuating environment in which effect of non--pulses can be incorporated.Detailed and explicit calculations are made as a function of the pulse area.The -pulse is obtained as a special case.It is shown that the decoherence control can be performed even by means of non--pulses.Our result is useful in controlling qubit in such quantum information manipulations like quantum processing and computation.