Abstract
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 the correlations between two subsystems.
Original language | English |
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Article number | 053038 |
Number of pages | 11 |
Journal | New Journal of Physics |
Volume | 13 |
DOIs | |
Publication status | Published - 20 May 2011 |
Keywords
- WAVE-PARTICLE DUALITY
- WHICH-WAY INFORMATION
- FRINGE VISIBILITY
- QUANTUM-MECHANICS
- INTERFEROMETER
- ENTANGLEMENT