Tunneling times of single photons
- URL: http://arxiv.org/abs/2110.01483v1
- Date: Mon, 4 Oct 2021 14:47:25 GMT
- Title: Tunneling times of single photons
- Authors: Jan Gulla, Johannes Skaar
- Abstract summary: Single photons have infinite tails, and the question of causality becomes meaningless.
We solve this problem by introducing strictly localized states close to single photons.
These states can be arbitrarily close to single photons while demonstrating causality for their leading edge.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Although the group delay of classical pulses through a barrier may suggest
superluminality, the information transfer is limited by the precursor which
propagates at the vacuum light speed. Single photons, however, have infinite
tails, and the question of causality becomes meaningless. We solve this problem
by introducing strictly localized states close to single photons, which are
examples of optical states produced by on-demand single-photon sources. These
states can be arbitrarily close to single photons while demonstrating causality
for their leading edge.
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