Quantification of complementarity in multi-qubit systems

Details Quantification of complementarity in multi-qubit systems Quantification of complementarity in multi-qubit systems

2005-07-19

arxiv.org/abs/quant-ph/0507183v2

Phys. Rev. A 72, 052109 (2005).

Physics

Quantum Physics

12 pages, 10 figures (A display error about the figures in the previous version)

Scientific paper

10.1103/PhysRevA.72.052109

Complementarity was originally introduced as a qualitative concept for the discussion of properties of quantum mechanical objects that are classically incompatible. More recently, complementarity has become a \emph{quantitative} relation between classically incompatible properties, such as visibility of interference fringes and "which-way" information, but also between purely quantum mechanical properties, such as measures of entanglement. We discuss different complementarity relations for systems of 2-, 3-, or \textit{n} qubits. Using nuclear magnetic resonance techniques, we have experimentally verified some of these complementarity relations in a two-qubit system.

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