Research at the Centre for Quantum Physics
Prof. Dr. Sajid Qamar
Associate Director, Centre for Quantum Physics

Sajid Qamar received his PhD under the supervision of Prof. M. Suhail Zubairy (S.I. & H.I.) in 2000. Before joining the Centre for Quantum Physics, COMSATS Institute of Information Technology, Islamabad in 2007, he served as Assistant Professor and then Acting Dean Faculty of Computer Science and Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, Swabi. Currently he is working in the field of theoretical quantum optics and his main area of research includes; sub-wavelength atom localization, quantum state measurement of the radiation field, coherent control of the GH-shift, and quantum entanglement.

Email:sajid_qamar@comsats.edu.pk
          sajid_qamar@hotmail.com

2011
1. “Scheme for the teleportation of bipartite entangled state of the two cavity modes” M. Irfan, S. Qamar, and S. Qamar, Opt. Comm. 284, 675 (2011).

2. "Autler-Townes triplet spectroscopy: An analytical approach", F. Ghafoor, Opt. Commun. 284, 1913 (2011).

3. “Velocity selection for ultracold atoms using bimodal mazer action: Effects of detuning” M. Usman, S. Qamar, and S. Qamar, Opt. Comm. 284, 2182 (2011).
2010
1. "Autler-Townes triplet spectroscopy: An analytical approach", F. Ghafoor, Opt. Commun. (accepted 2010).

2. "An alternative realization of 't Hooft's quantum determinism", M.Sadiq and F. Ghafoor, Phys. Lett. A 375 11-13 (2010).

3. "Nonadiabatic optical transitions as a turn-on switch for pulse shaping", F.A. Hashmi and M.A. Bouchene, Phys. Rev. A 82 043432 (2010).

5. “Coherent control of the Goos-Hanchen shift”, Ziauddin, S. Qamar, and M. S. Zubairy, Phys. Rev. A 81, 023821 (2010).

6. “Effect of phase fluctuations on entanglement generation in correlated emission laser with injected coherence”, S. Qamar, S. Qamar, and M. S. Zubairy, Opt. Commun. 283, 781 (2010).

7. “Velocity selection for ultracold atoms using mazer action in a bimodal mazer cavity”, A. Irshad, S. Qamar, and S. Qamar, Opt. Commun. 283, 54 (2010).

8. “Entanglement dynamics of high dimensional bipartite field state inside the cavities in dissipative environment”, R. Tahira, M. Ikram, S. Bougouffa, and M. S. Zubairy, J. Phys. B: At. Mol. Opt. Phys. 43, 035502 (2010).

9. “An engineering two-mode field NOON state in cavity QED”, F. Saif, R. Islam, and A. H. Khosa, J. Phys. B: At. Mol. Opt. Phys. 43, 015501 (2010).

10. "Remote preparation of atomic and field cluster states from a pair of tri-partite GHZ states",A. H. Khosa, Rameez-ul-Islam, and F. Saif, Chinese Physics B, vol. 19, no. 4, p. 040309, 2010.
2009
9. “Entanglement in a bright light source via Raman-driven coherence”, S. Qamar, M. Al-Amri, and M. S. Zubairy, Phys. Rev. A 79, 013831 (2009).

10. “Atomic state teleportation: From internal to external degrees of freedom”, R. Islam, M. Ikram, R. Ahmed, A. H. Khosa, and F. Saif, Jr. of Mod. Opt., 56, 875 (2009).

11. “Entanglement of Gaussian states using beam splitter”, R. Tahira, M. Ikram, H. Nha, and M. S. Zubairy, Phys. Rev. A 79, 023816 (2009).

12. “Directional property of radiation emitted from entangled atoms”, B.-G. Kim, C. H. R. Ooi, M. Ikram, and H.-W. Lee, Phys. Lett. A 373, 1658 (2009).

13. “Hanbury Brown-Twiss effect and thermal light ghost imaging”, L. -G. Wang, S. Qamar, S.-Y. Zhu, and M. S. Zubairy, Phys. Rev. A 79, 033835 (2009).

14. “Subwavelength atom localization via coherent manipulation of the Raman gain process”, S. Qamar, A. Mehmood, and S. Qamar, Phys. Rev. A 79, 033848 (2009).

15. “Atom microscopy via two-photon spontaneous emission spectroscopy”, S. Qamar, J. Evers, and M. S. Zubairy, Phys. Rev. A 79, 043814 (2009).

16. “Generation of cavity field Cluster and GHZ states using Bragg-regime atom interferometry”, T. Abbas, R. Islam, A. H. Khosa and F. Saif, J. Russ. Laser. Res. 30, 267 (2009).

17. “Entangled radiation via a Raman-driven quantum beat laser”, S. Qamar, M. Al-Amri, S. Qamar, and M. S. Zubairy, Phys. Rev. A 80, 033818 (2009).

18. "Entanglement in correlated spontaneous emission lasers", M. Al-Amri, S. Qamar, S. Qamar, and M. S. Zubairy, Quantum Information Processing, vol. 8, no. 6, pp. 587-605, 2009.

19. “Atomic cluster and Graph states: An engineering proposal”, R. Islam, A. H. Khosa, and F. Saif, J. Phys. Soc. Jpn. 78, 114401 (2009).
2008
20. “Generation of Bell, NOON and W states via atom interferometry”, R. Islam, A. H. Khosa, and F. Saif, J. Phys. B: At. Mol. Opt. Phys. 41, 35505 (2008).

21. “Control of Goos-Hanchen shift of a light beam via coherent driving field”, L. -G. Wang, M. Ikram, and M. S. Zubairy, Phys. Rev. A 77, 023811 (2008).

22. “One-atom correlated emission laser”, H. -J. Kim, A. H. Khosa, H.-W. Lee, and M. S. Zubairy, Phys. Rev. A 77, 23817 (2008).

23. “The influence of spatial coherence on the Goos-Hanchen shift at total internal reflection”, L. -Q. Wang, L. -G. Wang, S. -Y. Zhu, and M. S. Zubairy, J. Phys. B: At. Mol. Opt. Phys. 41, 055401 (2008).

24. “A scalable cavity-QED-based scheme of generating entanglement of atoms and of cavity fields”, J. Lee, J. Park, S. M. Lee, H.-W. Lee, and A. H. Khosa, Phys. Rev. A 77, 032327 (2008).

25. “Manipulation of Raman process via incoherent pump, tunable intensity and phase control”, L. -G. Wang, S. Qamar, S.-Y. Zhu, and M. S. Zubairy, Phys. Rev. A. 77, 033833 (2008).

26. “Remote field and atomic state preparation”, R. Islam, M. Ikram, A. H. Khosa, and F. Saif, Intl. Jr. of Quant. Inf., 6, 393 (2008).

27. “Generation of field cluster states through collective operation of cavity QED disentanglement eraser”, R. Islam, A. H. Khosa, H.-W. Lee, and F. Saif, Eur. Phys. J. D. 48, 271 (2008).

28. “Quantum beat laser as a source of entangled radiation”, S. Qamar, F. Ghafoor, M. Hillery, and M. S. Zubairy, Phys. Rev. A 77, 062308 (2008).

29. “Entanglement in a parametric converter”, S. –Y. Lee, S. Qamar, H. -W. Lee, and M. S. Zubairy, J. Phys. B: At. Mol. Opt. Phys. 41, 145504 (2008).

30. “Quantum teleportation of high dimensional entangled state”, Q. Gulfam, R. Islam, and M. Ikram, J. Phys. B: At. Mol. Opt. Phys. 41, 165502 (2008).

31. “Entanglement dynamics of a pure bipartite system in dissipative environment”, R. Tahira, M. Ikram, T. Azim, and M. S. Zubairy, J. Phy. B: At. Mol. Opt. Phys. 41, 205501 (2008).
2007
32. “Autler-Townes Triplet Spectroscopy”, F. Ghafoor, S. Qamar, S.-Y. Zhu, and M. S. Zubairy, Opt. Commun. 273(2), 464(2007).

33. “Engineering maximally entangled N-photon NOON field states using atom interferometer based on Bragg regime cavity QED”, R. Islam, M. Ikram, and F. Saif, J. Phys. B: At. Mol. Opt. Phys. 40, 1359 (2007).

34. “Generating entangled states of continuous variables via cross-Kerr nonlinearity”, Z. M. Zhang, A. H. Khosa, M. Ikram, and M. S. Zubairy, J. Phys. B: At. Mol. Opt. Phys. 40, 1917 (2007).

35. “Atom localization and center-of-mass wave-function determination via multiple simultaneous quadrature measurement”, J. Evers, S. Qamar, and M. S. Zubairy, Phys. Rev. A 75, 053809 (2007).

36. “Influence of pump-phase fluctuations on entanglement generation using a correlated spontaneous emission laser”, S. Qamar, H. Xiong, and M. S. Zubairy, Phys. Rev. A 75, 062305 (2007).

37. “Disentanglement in a two-qubit system subjected to dissipation environments”, M. Ikram, F. -L. Li, and M. S. Zubairy, Phys. Rev. A 75, 062336 (2007).

38. “Entanglement generation in a two mode quantum beat laser”, M. Ikram, G.-X. Li, and M. S. Zubairy, Phys. Rev. A 76, 042317 (2007).
2006
39. "The influence of laser fluctuations on entanglement generation in a non-degenerate parametric amplifier", K. Ahmed, H. Xiong, and M. S. Zubairy, Optics Communications, vol. 262, no. 1, pp. 129-132, Jun. 2006.

40. “Measurement of Wigner function via atomic beam deflection in the Raman-Nath regime”, A. H. Khosa, and M. S. Zubairy, J. Phys. B: At. Mol. Opt. Phys. 39, 5079 (2006).