Ooi, Chong Heng Raymond (2008) Extended photon correlation in a negative-temperature medium. Physical Review A, 77 (5). 053820. ISSN 2469-9926, DOI https://doi.org/10.1103/PhysRevA.77.053820.
Full text not available from this repository.Abstract
We show how two-photon correlation of a two-level amplifier in the small signal regime depends on the atomic populations and the propagation length. We predict that inverted population associated with negative temperature gives a very long correlation time even in the presence of decoherence, a useful asset for quantum communication. The correlation vanishes for very dilute atomic gas. Analytical solutions for the field operators obtained by Fourier transform and Laplace transform (with initial condition) of the time variable appear very different but yield identical numerical results except for certain parameters. The physical explanation behind the deviation is given. The presence of thermal photons is found to reduce the correlation time.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Additional Information: | Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA |
| Uncontrolled Keywords: | Resonance fluorescence; Laser-amplifier; Quantum-theory |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Miss Malisa Diana |
| Date Deposited: | 08 Jul 2013 07:37 |
| Last Modified: | 09 Oct 2019 07:12 |
| URI: | http://eprints.um.edu.my/id/eprint/7945 |
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