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We experimentally demonstrate the superior discrimination of separated,unentangled two-qubit correlated states using nonlocal measurements, whencompared with measurements based on local operations and classicalcommunications. When predicted theoretically, this phenomenon was dubbed"quantum nonlocality without entanglement." We characterize the performance ofthe nonlocal, or joint, measurement with a payoff function, for which wemeasure 0.72(2), compared with the maximum locally achievable value of 2/3 andthe overall optimal value of 0.75.Comment: 4 pages, 3 figures, RevTeX

Demonstrating Superior Discrimination of Locally Prepared States Using Nonlocal Measurements