Gaussian-state entanglement in a quantum beat laser

Journal Article · Sun May 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.054304· OSTI ID:21546908

Tahira, Rabia; Ikram, Manzoor ^[1]; Nha, Hyunchul ^[2]; Zubairy, M Suhail ^[1]

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1. Centre for Quantum Physics, COMSATS Institute of Information Technology, Islamabad (Pakistan)
2. Texas A and M University at Qatar, Education City, P.O. Box 23874, Doha (Qatar)

Recently quantum beat lasers have been considered as a source of entangled radiation [S. Qamar, F. Ghafoor, M. Hillery, and M. S. Zubairy, Phys. Rev. A 77, 062308 (2008)]. We investigate and quantify the entanglement of this system when the initial cavity modes are prepared in a Gaussian two-mode state, one being a nonclassical state and the other a thermal state. It is investigated how the output entanglement varies with the nonclassicality of the input Gaussian state, thermal noise, and the strength of the driving field.

• OSTI ID: 21546908
• Journal Information: Physical Review. A, Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevA.83.054304; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GAUSSIAN PROCESSES
LASER CAVITIES
LASERS
NOISE
QUANTUM ENTANGLEMENT