FRINGE VISIBILITY AND WHICH-WAY INFORMATION - AN INEQUALITY

Authors
ENGLERT BG
Citation
Bg. Englert, FRINGE VISIBILITY AND WHICH-WAY INFORMATION - AN INEQUALITY, Physical review letters, 77(11), 1996, pp. 2154-2157
Citations number
14
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
77
Issue
11
Year of publication
1996
Pages
2154 - 2157
Database
ISI
SICI code
0031-9007(1996)77:11<2154:FVAWI->2.0.ZU;2-E
Abstract
An inequality is derived according to which the fringe visibility in a two-way interferometer sets an absolute upper bound on the amount of which-way information that is potentially stored in a which-way detect or. In some sense, this inequality can he regarded as quantifying the notion of wave-particle duality. The derivation of the inequality does not make use of Heisenberg's uncertainty relation in any form.