INTERFERENCE OF INDEPENDENT LASER-BEAMS AT THE SINGLE-PHOTON LEVEL - A FIELD-THEORETIC DESCRIPTION

Authors
AGARWAL GS HARIHARAN P
Citation
Gs. Agarwal et P. Hariharan, INTERFERENCE OF INDEPENDENT LASER-BEAMS AT THE SINGLE-PHOTON LEVEL - A FIELD-THEORETIC DESCRIPTION, Optics communications, 103(1-2), 1993, pp. 111-115
Citations number
14
Categorie Soggetti
Optics
Journal title
Optics communications → ACNP
ISSN journal
00304018
Volume
103
Issue
1-2
Year of publication
1993
Pages
111 - 115
Database
ISI
SICI code
0030-4018(1993)103:1-2<111:IOILAT>2.0.ZU;2-6
Abstract
It has been shown experimentally that two independent laser beams can interfere at light levels at which the probability of more than one ph oton being present simultaneously in the optical path is negligibly sm all. This letter presents an explicit description of these interferenc e effects using the techniques of quantum-field theory. It is shown th at the interference arises because the detected photon can come from e ither of the two beams.