The meaning of group delay in barrier tunneling: A re-examination of superluminal group velocities

Details The meaning of group delay in barrier tunneling: A re-examination of superluminal group velocities The meaning of group delay in barrier tunneling: A re-examination of superluminal group velocities

2006-01-12

arxiv.org/abs/quant-ph/0601085v1

New J. Phys. 8, 101 (2006) http://stacks.iop.org/1367-2630/8/101

Physics

Quantum Physics

33 pages, 4 figures

Scientific paper

10.1088/1367-2630/8/6/101

We show that the group delay in tunneling is not a traversal time but a lifetime of stored energy or stored probability escaping through both ends of the barrier. Because it is a lifetime associated with both forward (transmitted) and backward (reflected) fluxes, it cannot be used to define a group velocity for forward transit in cases where a wavepacket is mostly reflected. For photonic tunneling barriers the group delay is identical to the dwell time which is also a property of an entire wave function with reflected and transmitted components. Theoretical predictions and experimental reports of superluminal group velocities in barrier tunneling are re-interpreted.

Affiliated with

Also associated with

No associations

Rating

The meaning of group delay in barrier tunneling: A re-examination of superluminal group velocities does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The meaning of group delay in barrier tunneling: A re-examination of superluminal group velocities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The meaning of group delay in barrier tunneling: A re-examination of superluminal group velocities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-452576