Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 22: Posters: Quantum Optics and Photonics II
Q 22.31: Poster
Tuesday, March 10, 2020, 16:30–18:30, Empore Lichthof
A cryogenic surface-electrode ion trap apparatus for high-fidelity microwave quantum simulations — •Sebastian Halama1, Timko Dubielzig1, Giorgio Zarantonello2,1, Henning Hahn2,1, Amado Bautista-Salvador2, and Christian Ospelkaus1,2 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany — 2Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
We report on the latest results achieved in our cryogenic surface-electrode ion trap with integrated microwave conductors for near-field quantum control of 9Be+. These traps are promising systems for analog quantum simulators and for quantum logic applications. Our group developed a trap with an integrated meander-like microwave guide for driving motional sidebands on a 9Be+ ion. In a room temperature apparatus, we have shown, that this kind of trap is capable of supporting entangling two-qubit gates with a fidelity of over 99 % [1]. To improve this result even further our trap operates in a cryogenic vacuum chamber. This will suppress electrical field noise, acting on the ion and originating from thermal effects [2], which could finally lead to fault tolerant quantum computation in a ion-trap based scalable architecture. We will discuss the vibration isolated closed cycle cryostat and the design of the vacuum chamber with all electrical supplies necessary to operate the trap.
[1] arXiv:1911.03954 [quant-ph] (2019)
[2] Phys. Rev. A 89, 012318 (2014)