Purifying two-bit quantum gates and joint measurements in cavity QED
S. J. van Enk, J. I. Cirac, P. Zoller
Abstract
Using a cavity QED setup we show how to implement a particular joint measurement on two atoms in a fault tolerant way. Based on this scheme, we illustrate how to realize quantum communication over a noisy channel when local operations are subject to errors. We also present a scheme to perform and purify a universal two-bit gate.
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