Freiburg 2024 – scientific programme
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A: Fachverband Atomphysik
A 15: Poster I
A 15.28: Poster
Tuesday, March 12, 2024, 17:00–19:00, Tent A
QRydDemo - A Rydberg Atom Quantum Computer Demonstrator — •Achim Scholz1,2, Philipp Ilzhöfer1,2, Ratnesh Kumar Gupta1,2, Govind Unnikrishnan1,2, Jiachen Zhao1,2, Sebastian Weber3,2, Hans-Peter Büchler3,2, Simone Montangero4, Jürgen Stuhler5, Tilman Pfau1,2, and Florian Meinert1,2 — 15th Inst. of Physics, University of Stuttgart — 2IQST — 3Inst. for Theoretical Physics III, University of Stuttgart — 4Inst. for Complex Quantum Systems, University of Ulm — 5TOPTICA Photonics AG
Within the QRydDemo project, our goal is to realize a neutral atom quantum computer setup using strontium Rydberg atoms trapped in optical tweezers. For this platform we demonstrate a novel fine-structure qubit, encoded in the metastable triplet manifold of 88Sr. First measured single-atom Rabi operations implemented via strong two-photon Raman transitions between the qubit states pave the road towards fast single-qubit gates. Aiming towards the realization of high-fidelity two-qubit gates via single-photon Rydberg transitions, we furthermore investigate a triple magic wavelength, for which not only both qubit states but also the Rydberg state is magically trapped.
Our experimental platform is based on a dynamic, two-dimensional tweezer array of up to 500 qubits, generated by a setup of 20 AODs to allow shuffling operations during the qubit coherence time. The atom array is protected by an electric field control with ITO coated windows. To support the hardware we developed a compiler backend tailored to our Rydberg platform. With an available WebUI this allows emulation and future operation of the quantum computer by public access.
Keywords: Quantum Computer; Tweezer; Dynamic Atom Array