Entanglement in Weisskopf-Wigner theory of atomic decay in free space

OPTICS COMMUNICATIONS

卷:282

Article

Leandro, J. F.¹  Semiao, F. L.¹ 

[1] Univ Estadual Ponta Grossa, Dept Fis, BR-84030900 Ponta Grossa, PR, Brazil

关键词: Weisskopf-Wigner theory;    Entanglement;    Spontaneous emission;   

DOI  :  10.1016/j.optcom.2009.08.059

来源: Elsevier

【 摘 要 】

In this paper, we use the Weisskopf-Wigner theory to study the entanglement in the state of the free-space radiation field produced from vacuum due to atomic decay. We show how bipartite entanglement is shared between different partitions of the radiation modes. We investigate the role played by the size of the partitions and their detuning with the decaying atom. The dynamics of the atom-field entanglement during the atomic decay is also briefly discussed. From this dynamics, we assert that such entanglement is the physical quantity that fix the statistical atomic decay time. (C) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

Free