Observation of nonlocality sharing via not-so-weak measurements
arXiv:1912.02979 · doi:10.1103/PhysRevA.102.032220
Abstract
Nonlocality plays a fundamental role in quantum information science. Recently, it has been theoretically predicted and experimentally demonstrated that the nonlocality of an entangled pair may be shared among multiple observers using weak measurements with moderate strength. Here we devise an optimal protocol of nonlocality sharing among three observers and show experimentally that nonlocality sharing may be also achieved using weak measurements with near-maximum strength. Our result sheds light on the interplay between nonlocality and quantum measurements and, may find applications in quantum steering, unbounded randomness certification and quantum communication network.
arXiv comment6 pages, 4 figures
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- Genuine Einstein-Podolsky-Rosen steering of three-qubit states by multiple sequential observers
- Recycling qubits for the generation of Bell nonlocality between independent sequential observers
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- Sequential information theoretic protocols in continuous variable systems