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Open Quantum Systems Decoherence
Do single photons tunnel faster than light?
arXiv
Authors: Herbert G. Winful
Year
2007
Paper ID
49237
Status
Preprint
Abstract Read
~2 min
Abstract Words
94
Citations
N/A
Abstract
Experiments done in the early 1990's produced a surprising result: that single photons pass through a photonic tunnel barrier with a group velocity faster than the vacuum speed of light. Subsequent experiments with classical pulses have also revealed apparent superluminal group velocities as well as tunneling times that saturate with barrier length, a phenomenon known as the Hartman effect. In this paper we show that the measured delays are in fact cavity lifetimes as opposed to transit times. This interpretation resolves the Hartman paradox and shows that tunneling is not superluminal as widely believed.
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- This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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- Experiments done in the early 1990's produced a surprising result: that single photons pass through a photonic tunnel barrier with a group velocity faster than the vacuum speed...
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