Physics – Quantum Physics
Scientific paper
2010-10-28
Physics
Quantum Physics
19 pages, 5 figure
Scientific paper
Rabi oscillations driven by \emph{repeated pulses} is a basic atom-photon interaction process. It is widely used in various physical realization schemes of quantum computation. We show that the population inversion has no revival phenomenon, collapses exponentially, and has a dual-pulse structure in every period. As an example, we investigate the properties of this process within ion trap system. The conclusion we arrived at is that the quantum computations realized by Cirac-Zoller scheme at wavelength $10^{-6}$ m cannot be reliable for an algorithm if its number of Controlled-NOT operation in one error-correction period on any physical qubit is greater than $10^2$. This conclusion may be independent of any possible technical improvement in future.
Chen Yufu
Yang Biyao
Yang Li
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