Quantification of complementarity in multiqubit systems
- 16 November 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 72 (5), 052109
- https://doi.org/10.1103/physreva.72.052109
Abstract
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 quantitative relation between classically incompatible properties, such as the 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 two-, three-, or qubits. Using nuclear magnetic resonance techniques, we have experimentally verified some of these complementarity relations in a two-qubit system.
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