Direct observation of Hardy's paradox by joint weak measurement with an entangled photon pair

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dc.creatorYokota, Kazuhiro
dc.creatorYamamoto, Takashi
dc.creatorKoashi, Masato
dc.creatorImoto, Nobuyuki
dc.date2008-11-11
dc.date2009-03-05
dc.date.accessioned2026-07-07T12:48:53Z
dc.date.available2026-07-07T12:48:53Z
dc.descriptionWe implemented a joint weak measurement of the trajectories of two photons in a photonic version of Hardy's experiment. The joint weak measurement has been performed via an entangled meter state in polarization degrees of freedom of the two photons. Unlike Hardy's original argument in which the contradiction is inferred by retrodiction, our experiment reveals its paradoxical nature as preposterous values actually read out from the meter. Such a direct observation of a paradox will give us a new insight into the spooky action of quantum mechanics.
dc.description9 pages, 4 figures; Eq.(10) and (11) corrected, appendices added
dc.identifierhttps://arxiv.org/abs/0811.1625
dc.identifierhttp://arxiv.org/abs/0811.1625
dc.identifierNew J. Phys. 11 (2009) 033011
dc.identifierdoi:10.1088/1367-2630/11/3/033011
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/222213
dc.subjectQuantum Physics
dc.titleDirect observation of Hardy's paradox by joint weak measurement with an entangled photon pair
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