In situ measurement of the dynamic structure factor in ultracold quantum gases

Abstract

We propose an experimental setup to efficiently measure the dynamic structure factor of ultracold quantum gases. Our method uses the interaction of the trapped atomic system with two different cavity modes, which are driven by external laser fields. By measuring the output fields of the cavity, the dynamic structure factor of the atomic system can be determined. In contrast to previous approaches, the atomic system is not destroyed during the measurement process. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.