Issue
EPL
Volume 87, Number 4, August 2009
Article Number 44003
Number of page(s) 6
Section Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics
DOI http://dx.doi.org/10.1209/0295-5075/87/44003
Published online 07 September 2009
EPL, 87 (2009) 44003
DOI: 10.1209/0295-5075/87/44003

Density matrix approach of the excitation on coherent states of the pseudoharmonic oscillator

D. Popov, N. Pop, I. Luminosu and V. Chiriţoiu

Department of Physical Foundations of Engineering, “Politehnica" University of Timisoara B-dul V. Parvan, No. 2, Timisoara, 300223, Romania, EU

nicolina.pop@et.upt.ro

received 3 June 2009; accepted in final form 5 August 2009; published August 2009
published online 7 September 2009

Abstract
We have examined the excitation on coherent states of the pseudoharmonic oscillator which are obtained by repeated action of the raising operator on the usual coherent states. By using the density matrix approach, we have examined some interesting properties (including the nonclassicality) of these states, both in pure and also in mixed (thermal) cases.

PACS
42.50.-p - Quantum optics.
05.30.-d - Quantum statistical mechanics.
42.50.Ar - Photon statistics and coherence theory.

© EPLA 2009