Clock-laser assisted quantum simulations with ultracold atoms

本提案的主要目标是开发和演示一种完全不同的寻址方法，没有这些限制，即使用超宽带时钟激光器进行频率寻址。通过在频率空间而不是实空间中寻址，这种方法基本上不受衍射极限的影响。在超冷费米子锶中，在698nm处存在一条线宽小于1Hz的超窄时钟线。这条线也构成了最精确的原子钟的基础（例如NPL， Ye group JILA，…）。我们的团队目前正在构建一个新的超冷锶实验，我们已经获得了一个合适的高功率时钟激光器，即一个稳定到具有hz级线宽的ULE腔的Ti:Sa激光器。

The main goal of this proposal is to develop and demonstrate a fundamentally different addressing approach without these limitations, namely frequency addressing using ultranarrow clock lasers. By addressing in frequency space instead of real space, this approach is fundamentally independent of the diffraction limit. In ultracold fermionic Strontium, there is an ultra-narrow clock line at 698nm with a linewidth of less than 1Hz. This line also forms the basis for the most accurate atomic clocks (e.g. NPL, Ye group JILA, ...). Our group is currently constructing a new ultracold Strontium experiment and we have access to a suitable high-power clock laser, i.e. a Ti:Sa laser stabilised to a ULE cavity with Hz-level linewidth.