Physics – Quantum Physics
Scientific paper
2003-11-17
Phys. Rev. A 70, 012110 (2004)
Physics
Quantum Physics
10 pages, 5 figures, RevTex
Scientific paper
10.1103/PhysRevA.70.012110
We model ideal arrival-time measurements for free quantum particles and for particles subject to an external interaction by means of a narrow and weak absorbing potential. This approach is related to the operational approach of measuring the first photon emitted from a two-level atom illuminated by a laser. By operator-normalizing the resulting time-of-arrival distribution, a distribution is obtained which for freely moving particles not only recovers the axiomatically derived distribution of Kijowski for states with purely positive momenta but is also applicable to general momentum components. For particles interacting with a square barrier the mean arrival time and corresponding ``tunneling time'' obtained at the transmission side of the barrier becomes independent of the barrier width (Hartman effect) for arbitrarily wide barriers, i.e., without the transition to the ultra-opaque, classical-like regime dominated by wave packet components above the barrier.
Hegerfeldt Gerhard C.
Muga Gonzalo J.
Navarro B.
Seidel Daniel
No associations
LandOfFree
Operator normalized quantum arrival times in the presence of interactions 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 Operator normalized quantum arrival times in the presence of interactions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Operator normalized quantum arrival times in the presence of interactions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-605659