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Complete Characterization of a Quantum Process: the Two-Bit Quantum Gate

J. F. Poyatos·J. I. Cirac·P. Zoller
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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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J. F. Poyatos, J. I. Cirac, P. Zoller. 1996-11-10. Complete Characterization of a Quantum Process: the Two-Bit Quantum Gate. https://doi.org/10.1103/physrevlett.78.390

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