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Phys. Rev. A 75, 062305 (2007) [10 pages]

Influence of pump-phase fluctuations on entanglement generation using a correlated spontaneous-emission laser

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Shahid Qamar1,*, Han Xiong2, and M. Suhail Zubairy1,2,3,†
1Centre for Quantum Physics, COMSATS Institute of Information Technology, Islamabad, Pakistan
2Institute for Quantum Studies and Department of Physics, Texas A& M University, College Station, Texas 77843, USA
3Texas A&M University at Qatar, Education City, P.O. Box 23874, Doha, Qatar

Received 12 July 2006; published 6 June 2007

In this paper, we study the effect of phase fluctuations of the pump field upon the entanglement generation in a two-photon correlated emission laser (CEL). We consider initial vacuum and coherent state for the two-cavity modes. In both cases, we find reduction in the entanglement due to the phase fluctuations. However, our results indicate that entanglement generation is highly sensitive to phase fluctuations when we have initial coherent state in the two modes.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.75.062305
DOI:
10.1103/PhysRevA.75.062305
PACS:
03.67.Mn, 42.65.Lm

*Permanent address: Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad, Pakistan. Electronic address: shahid_qamar@pieas.edu.pk

†Electronic address: zubairy@tamu.edu

 
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