Document Type

Article

Publication Date

1-1-2009

Abstract

We investigate the directional property of photons emitted spontaneously from a partially-excited many-atom system. There exists a strong directional correlation between the emitted photons and the photons that have been absorbed by laser excitation and among all emitted photons themselves. Such a strong correlation arises from entanglement of W-type generated in the atomic system during the process of absorption and emission. (c) 2009 Elsevier B.V. All rights reserved.

Keywords

Entanglement, Spontaneous emission, Directional property

Publication Title

Physics Letters A

ISSN

0375-9601

Divisions

PHYSICS

Volume

373

Issue

18-19

Publisher

Elsevier

Additional Information

Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, MALAYSIA

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