Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 6: Quantum Information (Concepts and Methods) I
Q 6.3: Vortrag
Montag, 5. März 2018, 11:15–11:30, K 1.019
Ultra-low vibration closed-cycle cryogenic surface-electrode ion trap setup — •Sebastian Grondkowski1, Timko Dubielzig1, Fabian Ude1, Giorgio Zarantonello1,2, Henning Hahn1,2, Martina Wahnschaffe2,1, Amado Bautista-Salvador2,1, and Christian Ospelkaus1,2 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover — 2PTB, Bundesallee 100, 38116 Braunschweig
Operation of ion traps at cryogenic temperatures is highly benefitial to fight the effects of anomalous motional heating, obtain excellent electrical properties of materials and achieve long trap lifetimes [1-3]. When using a closed-cycle cryostat to cool the apparatus, excessive vibrations associated with the mechanical motion of the cooler should be avoided in order not to affect the optical addressing of the ions adversely. We discuss a mechanical suspension for a commercial vibration isolation interface that allows easy alignment and long term stability of the setup. We present an interferometric approach to determine the residual movement of the cold head and find that for suitable temperatures of the cold stage, we can place an upper limit of 8 nm RMS on the vibration level, limited by the performance of the interferometer.
[1] J. Chiaverini and J. M. Sage, PRA 89, 012318 (2014)
[2] S. W. Van Sciver, Helium Cryogenics, 2nd ed., Springer (2012)
[3] D. Gandolfi et al., Rev. Sci. Instr. 83, 084705 (2012)