Heidelberg 2015 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 34: Quantum Effects: QED I
Q 34.5: Talk
Wednesday, March 25, 2015, 12:15–12:30, B/SR
Atomic mirror effect based on correlations among atoms — •Qurrat-ul-Ain Gulfam1 and Zbigniew Ficek2 — 1Department of Physics, Jazan University, Jazan, Saudi Arabia — 2The National Center for Mathematics and Physics, KACST, Riyadh, Saudi Arabia
Reflection of light off correlated two-level identical atoms has been investigated. In schemes demonstrating the atomic mirror effect, usually atoms have to be coupled with external media such that a uni-dimensional emission from the system is ensured. On the contrary, here, we have considered a real 3-dimensional dipole-dipole interaction among free space atoms. The directionality in the collective spontaneous emission is induced by the interaction-based effects. Clear evidence of the mirror effect like in a one dimensional cavity has been noticed in position configurations as simple as 3-atom linear chain. Atomic interactions also strongly affect the angular distribution of the first order correlation function detected in the far field. Such analysis allows to determine the suitable directions for enhanced reflectivity.
[1] D. E. Chang, et al, Phys. Rev. Lett., 110, 113606 (2013).