基礎研究、頑張れ。
Direct observation of Hardy's paradox by joint weak measurement with an entangled photon pair
後で読みます。
http://www.iop.org/EJ/article/1367-2630/11/3/033011/njp9_3_033011.html
We implemented a joint weak measurement of the trajectories of two photons in a photonic version of Hardy's experiment.