1. Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, CH-3012Bern, Switzerland
2. Quantum Technology Centre, Physics Department, Lancaster University, LancasterLA1 4YB, United Kingdom
3. Department of Physics, College of Education for Pure Science, Tikrit University, Salahuddin, Al-Qadissiya
Street, 34001Tikrit, Iraq
4. Department of Physics, College of Science, University of Anbar, Anbar-Ramadi, Ceramic Street, 31001Anbar, Iraq