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Purifying two-bit quantum gates and joint measurements in cavity QED

S. J. van Enk·J. I. Cirac·P. Zoller
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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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S. J. van Enk, J. I. Cirac, P. Zoller. 1997-08-19. Purifying two-bit quantum gates and joint measurements in cavity QED. https://doi.org/10.1103/physrevlett.79.5178

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