One-step synthesis of multiatom Greenberger-Horne-Zeilinger states - art. no. 230404

Authors
Citation
Sb. Zheng, One-step synthesis of multiatom Greenberger-Horne-Zeilinger states - art. no. 230404, PHYS REV L, 8723(23), 2001, pp. 0404
Citations number
28
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
8723
Issue
23
Year of publication
2001
Database
ISI
SICI code
0031-9007(200112)8723:23<0404:OSOMGS>2.0.ZU;2-O
Abstract
A scheme is proposed for generating maximally entangled Greenberger-Home-Ze ilinger (GHZ) atomic states for testing quantum nonlocality. In the scheme, three atoms are simultaneously sent through a nonresonant cavity in a vacu um state. They are initially in the same state, and thus there is no energy exchange in the process. The cavity-assisted collision results in a phase- shift which depends upon the collective atomic excitations, In principle, t he scheme can be generalized to generate N-atom GHZ states. The scheme is i nsensitive to cavity decay and requires only one cavity, providing new pros pects for testing fundamental aspects of quantum mechanics and for quantum information processing.