167 citations · 793 across the 28 of their papers we have counts for
6 papers · 1 filter
Classical picture of post-exponential decay
E. Torrontegui, J. G. Muga, J. Martorell +1
Post-exponential decay of the probability density of a quantum particle leaving a trap can be reproduced accurately, except for interference oscillations at the transition to the p…
Memory effects induced by initial switching conditions
J. Martorell, D. W. L. Sprung, W. van Dijk +1
Initial-switching refers to the way in which the decay of an initially confined state begins, as the barrier isolating it from the exterior is relaxed. We study these effects in th…
Enhanced observability of quantum post-exponential decay using distant detectors
E. Torrontegui, J. G. Muga, J. Martorell +1
We study the elusive transition from exponential to post-exponential (algebraic) decay of the probability density of a quantum particle emitted by an exponentially decaying source,…
Electron transmission and phase time in semiconductor superlattices
D. W. L. Sprung, W. van Dijk, C. N. Veenstra +1
We discuss the time spent by an electron propagating through a finite periodic system such as a semiconductor superlattice. The relation between dwell-time and phase-time is outlin…
Long time deviation from exponential decay: non-integral power laws
J. Martorell, J. G. Muga, D. W. L. Sprung
Quantal systems are predicted to show a change-over from exponential decay to power law decay at very long times. Although most theoretical studies predict integer power-law expone…
Biperiodic superlattices and the transparent state
D. W. L. Sprung, L. W. A. Vanderspek, W. Van Dijk +2
Coquelin et al. studied biperiodic semiconductor superlattices, which consist of alternating cell types, one with wide wells and the other narrow wells, separated by equal strength…