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Phys. Rev. A 77, 062308 (2008) [7 pages]

Quantum beat laser as a source of entangled radiation

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Shahid Qamar1,*, Fazal Ghafoor1, Mark Hillery2, and M. Suhail Zubairy1,3,4,†
1Center for Quantum Physics, COMSATS Institute of Information Technology, Islamabad, Pakistan
2Hunter College of CUNY, 65 Park Avenue, New York, New York 10065, USA
3Institute for Quantum Studies and Department of Physics, Texas A & M University, College Station, Texas 77843, USA
4Texas A & M University at Qatar, Education City, P. O. Box 23874, Doha, Qatar

Received 17 January 2008; published 5 June 2008

We consider a quantum beat laser [ Scully and Zubairy Phys. Rev. A 35 752 (1987)] as a source of entangled radiation. The system essentially consists of three-level atoms inside a doubly resonant cavity such that coherence is introduced by driving the upper two levels with a strong classical field of Rabi frequency Ω. We study the dynamics of this system for different values of Rabi frequencies in the presence of cavity losses. It is shown that entanglement can be generated in this system for different initial states of the field in the two modes.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.77.062308
DOI:
10.1103/PhysRevA.77.062308
PACS:
03.67.Mn, 03.67.Lx

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

†zubairy@physics.tamu.edu

 
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