Experimental entanglement verification and quantification via uncertainty relations

Details Experimental entanglement verification and quantification via uncertainty relations Experimental entanglement verification and quantification via uncertainty relations

2006-11-18

arxiv.org/abs/quant-ph/0611196v4

Europhysics Letters, 78, 40002 (2007)

Physics

Quantum Physics

5 pages, 3 figures and 2 tables

Scientific paper

10.1209/0295-5075/78/40002

We report on experimental studies on entanglement quantification and verification based on uncertainty relations for systems consisting of two qubits. The new proposed measure is shown to be invariant under local unitary transformations, by which entanglement quantification is implemented for two-qubit pure states. The nonlocal uncertainty relations for two-qubit pure states are also used for entanglement verification which serves as a basic proposition and promise to be a good choice for verification of multipartite entanglement.

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