document: Revisiting Hardy 's paradox : Counterfactual statements , real measurements , entanglement and weak values Hardy 's -LRB- 1992 -RRB- paradox is revisited . Usually the paradox is dismissed on grounds of counterfactuality , i.e. , because the paradoxical effects appear only when one considers results of experiments which do not actually take place . We suggest a new set of measurements in connection with Hardy 's scheme , and show that when they are actually performed , they yield strange and surprising outcomes . More generally , we claim that counterfactual paradoxes point to a deeper structure inherent to quantum mechanics
doc_bio_tags: O O O O O B I O B I O B O B I O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I
extractive_keyphrases: counterfactual statements real measurements entanglement weak values paradoxical effects quantum mechanics
abstractive_keyphrases: hardy paradox gedanken-experiments