1. Department of Physics, School of Science, Shiraz University , Shiraz 71454 , Iran
2. Biruni Observatory, School of Science, Shiraz University , Shiraz 71454 , Iran
3. ICRANet-Mazandaran, University of Mazandaran , P. O. Box 47415-416, Babolsar , Iran
4. Canadian Quantum Research Center 204-3002 32 Ave Vernon, BC V1T 2L7, Canada