Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 28: Quantum Information: Quantum Communication 1

Q 28.6: Vortrag

Mittwoch, 16. März 2011, 11:45–12:00, SCH A01

Lenses as an Atom-Photon Interface: A Simple Model — •Colin Teo¹ and Valerio Scarani^1,2 — ¹Centre for Quantum Technologies, Singapore — ²Department of Physics, National University of Singapore, Singapore

Strong interaction between the light field and an atom is often achieved with cavities. Recent experiments have used a different configuration: a propagating light field is strongly focused using a system of lenses, the atom being supposed to sit at the focal position. In reality, this last condition holds only up to some approximation; in particular, at any finite temperature, the atom position fluctuates. We present a formalism that describes the focalized field and the atom sitting at an arbitrary position. As a first application, we show that thermal fluctuations do account for the extinction data reported in [1].

References:

[1] M. K. Tey et al., Nature Physics 4, 924 (2008)

[2] M. K. Tey et al., New Jour. Phys. 11, 043011 (2009)