Stuttgart 2012 – wissenschaftliches Programm
Q 71.3: Vortrag
Freitag, 16. März 2012, 14:30–14:45, V57.03
Amplifying single impurities immersed in a gas of ultracold atoms — •Beatriz Olmos1, Weibin Li1, Sebastian Hofferberth2, and Igor Lesanovsky1 — 1Midlands Ultracold Atom Research Centre (MUARC), School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom — 25. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart, Germany
We present a method for amplifying a single or scattered impurities immersed in a background gas of ultracold atoms so that they can be optically imaged and spatially resolved. Our approach relies on a Raman transfer between two stable atomic hyperfine states that is conditioned on the presence of an impurity atom. The amplification is based on the strong interaction among atoms excited to Rydberg states. We perform a detailed analytical study of the performance of the proposed scheme with particular emphasis on the influence of inevitable many-body effects.