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Quantum Non-Demolition Test of Bipartite Complementarity

F. de Melo·S. P. Walborn·János A. Bergou·L. Davidovich
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Abstract

We present a quantum circuit that implements a non-demolition measurement of complementary single- and bi-partite properties of a two-qubit system: entanglement and single-partite visibility and predictability. The system must be in a pure state with real coefficients in the computational basis, which allows a direct operational interpretation of those properties. The circuit can be realized in many systems of interest to quantum information.

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F. de Melo, S. P. Walborn, János A. Bergou, L. Davidovich. 2007-02-08. Quantum Non-Demolition Test of Bipartite Complementarity. https://doi.org/10.1103/physrevlett.98.250501

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