Physics – Quantum Physics
Scientific paper
2010-02-12
New Journal of Physics 13, 053038 (2011)
Physics
Quantum Physics
6 pages, 7 figures (including supplementary material)
Scientific paper
10.1088/1367-2630/13/5/053038
We demonstrate that the concept of information offers a more complete description of complementarity than the traditional approach based on observables. We present the first experimental test of information complementarity for two-qubit pure states, achieving close agreement with theory; We also explore the distribution of information in a comprehensive range of mixed states. Our results highlight the strange and subtle properties of even the simplest quantum systems: for example, entanglement can be increased by reducing correlations between two subsystems.
de Almeida Marcelo P.
Fedrizzi Alessandro
Paterek Tomasz
Škerlak Bojan
White Andrew G.
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