QUANTUM LIMITATIONS ON SUPERLUMINAL PROPAGATION

Authors
AHARONOV Y REZNIK B STERN A
Citation
Y. Aharonov et al., QUANTUM LIMITATIONS ON SUPERLUMINAL PROPAGATION, Physical review letters, 81(11), 1998, pp. 2190-2193
Citations number
8
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
81
Issue
11
Year of publication
1998
Pages
2190 - 2193
Database
ISI
SICI code
0031-9007(1998)81:11<2190:QLOSP>2.0.ZU;2-6
Abstract
Unstable systems such as media with inverted atomic population have be en shown to allow the propagation of analytic wave packets with group velocity faster than that of light, without violating causality. We il luminate the important role played by unstable modes in this propagati on and show that the quantum fluctuations of these modes and their uni tary time evolution impose severe restrictions on the observation of s uperluminal phenomena.