Quantification of complementarity in multi-qubit systems

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Date

2005-11-16

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The American Physical Society

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 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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Peng, X.; Zhu, X., Suter, D.; Du, J.; Liu, M.; Gao,K.: Quantification of complementarity in multi-qubit systems. In: Physical Reviews A Jg. 72(2005), 052109.