Optical simulation of adaptive nonlocality distillation
Wen‐Jing Chu, Ming Yang, Guo‐Zhu Pan, Zhuo‐Liang Cao · Physical Review A · 2018
An optical scheme for simulating adaptive nonlocality distillation is proposed. In the asymptotic limit, arbitrary correlated nonlocal boxes can be distilled to the maximally nonlocal one, i.e., the Popescu-Rohrlich box [S. Popescu and D. Rohrlich, Found Phys. 24, 379 (1994)]. The major obstacle in simulating the adaptive nonlocality distillation scheme, proposed by Brunner and Skrzypczyk [N. Brunner and P. Skrzypczyk, Phys. Rev. Lett. 102, 160403 (2009)], is how to simulate the nonlocal boxes with a quantum system and to get the output of each box without destroying the quantum state simulating it. Here the nonlocal boxes are simulated by appropriately pre- and postselected polarization entangled photon pairs. The output of the first box is measured without destroying the quantum state, simulating it by exploiting a quantum nondemolition measurement, which is realized by a standard quantum teleportation process. This scheme provides a feasible tool for the experimental study of the manipulation of nonlocality in the postquantum regime and the exact physical principle precisely distinguishing physically realizable correlations from nonphysical ones.