Signal velocity, causality, and quantum noise in superluminal light pulse propagation

A. Kuzmich, A. Dogariu, L. J. Wang, P. W. Milonni, R. Y. Chiao

Research output: Contribution to journalArticle

187 Scopus citations

Abstract

A realistic definition of the velocity of the signal carried by a light pulse is presented. This velocity is analyzed for the recently demonstrated superluminal light impulse propagation. It is shown that while the pulse and the effective signal are both advanced via propagation at a group velocity higher than c, or even negative, the signal velocity is still bounded by c.

Original languageEnglish (US)
Pages (from-to)3925-3929
Number of pages5
JournalPhysical review letters
Volume86
Issue number18
DOIs
StatePublished - Apr 30 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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