dorsal/arxiv
View Schema"Superluminal" tunnelling, quantum measurements and the speed of information transfer
| Authors | D. Sokolovski, A. Z. Msezane, V. R. Shaginyan |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0401159 |
| URL | https://arxiv.org/abs/quant-ph/0401159 |
Abstract
We 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 $\tau$ spent in the barrier is uncertain, whereas when $\tau$ 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.
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"abstract": "We exploit the analogy between tunnelling across a potential barrier and\nAharonov\u0027s weak measurements to resolve the long standing paradox between the\nimpossibility to exceed the speed of light and the seemingly \u0027superluminal\u0027\nbehaviur of the tunnelling particle in the barrier. We demonstrate that\n\u0027superluminality\u0027 occurs when the value of the duration $\\tau$ spent in the\nbarrier is uncertain, whereas when $\\tau$ is known accurately, no\n\u0027superluminal\u0027 behaviur is observed. In all cases only subluminal durations\ncontribute to the transmission, which precludes faster-than-light information\ntransfer, as shown by a recent experiment.",
"arxiv_id": "quant-ph/0401159",
"authors": [
"D. Sokolovski",
"A. Z. Msezane",
"V. R. Shaginyan"
],
"categories": [
"quant-ph"
],
"title": "\"Superluminal\" tunnelling, quantum measurements and the speed of information transfer",
"url": "https://arxiv.org/abs/quant-ph/0401159"
},
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