Temporal Bell inequalities: possible experimental tests

por Ramon Lapiedra (Universitat de València)

viernes 30 sept. 2005 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

Some temporal Bell inequalities are deduced under the assumption of joint realism and perfect correlation. No locality condition is needed. The absence of this locality condition implies that an eventual experimental violation of the temporal Bell inequalities would mean that this joint realism must be discarded (the assumption of perfect correlation being actually a testable property of the system). When the system is macroscopic, the perfect correlation assumption substitutes the Legget non-invasive measurability hypothesis advantageously. The new inequalities are violated in the quantum domain. For some of these inequalities the violation is clearly more severe than the similar violation in the case of ordinary Bell inequalities. Some microscopic and mesoscopic situations in which these inequalities could be tested are considered. In the mesoscopic case, testing temporal Bell inequalities would give a way of detecting the presence of true randomness in the apparent randomness of the system’s response. One could retrace this hypothetical true randomness to a quantum origin.