IQIM Postdoctoral and Graduate Student Seminar

Abstract: Rydberg atom arrays have emerged as a promising candidate for quantum computation. However, scaling up the platform beyond a few thousand qubits would require a modular approach. An integrated optical cavity could serve as a quantum networking node between distant quantum processors. In this talk, I will show our results towards this integration for two candidate platforms: a nano-photonic crystal cavity (PCC) and a Fabry-Perot Fiber cavity (FPFC). In our lab, we have already demonstrated all the necessary quantum networking capabilities of the PCC for ground-state atoms. Recently we have also shown that coherent Rydberg atom physics up to ~ 200um away from the device is possible, opening the door to its full integration in the future. Meanwhile, we have started characterizing the networking capabilities of the FPFC platform, which can provide simultaneous strong coupling of many atoms in optical tweezers. We measure strong single atom cooperativity of C=100 and I will show preliminary results of our fast non-destructive readout as well as the spectrum of up to two individually addressable atoms. Revealing the existence of an atomic dark state that could be used for scalable heralded entanglement generation.

Lunch will be provided, following the talk, on the lawn north of the Bridge Arcade