"Superluminal" tunnelling, quantum measurements and the speed of information transfer

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dc.creatorSokolovski, D.
dc.creatorMsezane, A. Z.
dc.creatorShaginyan, V. R.
dc.date2004-01-26
dc.date2004-06-20
dc.date.accessioned2026-07-07T06:08:52Z
dc.date.available2026-07-07T06:08:52Z
dc.descriptionWe exploit the analogy between tunnelling across a potential barrier and Aharonov's weak measurements to resolve the long standing paradox between the impossibility to exceed the speed of light and the seemingly 'superluminal' behaviur of the tunnelling particle in the barrier. We demonstrate that 'superluminality' occurs when the value of the duration $τ$ spent in the barrier is uncertain, whereas when $τ$ is known accurately, no 'superluminal' behaviur is observed. In all cases only subluminal durations contribute to the transmission, which precludes faster-than-light information transfer, as shown by a recent experiment.
dc.identifierhttps://arxiv.org/abs/quant-ph/0401159
dc.identifierhttp://arxiv.org/abs/quant-ph/0401159
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/91783
dc.subjectQuantum Physics
dc.title"Superluminal" tunnelling, quantum measurements and the speed of information transfer
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