Complete Characterization of a Quantum Process: the Two-Bit Quantum Gate
J. F. Poyatos, J. I. Cirac, P. Zoller
Abstract
We show how to fully characterize a quantum process in an open quantum system. We particularize the procedure to the case of a universal two-qubit gate in a quantum computer. We illustrate the method with a numerical simulation of a quantum gate in the ion trap quantum computer.
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