Proposal for Direct, Local Measurement of Entanglement for Pure Bipartite Systems of Arbitrary Dimension

Details Proposal for Direct, Local Measurement of Entanglement for Pure Bipartite Systems of Arbitrary Dimension Proposal for Direct, Local Measurement of Entanglement for Pure Bipartite Systems of Arbitrary Dimension

2008-12-18

arxiv.org/abs/0812.3457v1

Physics

Quantum Physics

4 pages, 1 figure

Scientific paper

Based on the complementarity relation between entanglement of a composite system and the purity of a subsystem, we propose a simple method to measure the amount of entanglement. The method can be applied to a bipartite system in a pure state of any arbitrary dimension. It requires only single qudit rotations and straightforward probability measurements performed on one of the subsystems, and can thus be easily implemented experimentally using linear optical devices.

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