Regensburg 2022 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 15: Nano- and Optomechanics

TT 15.6: Vortrag

Dienstag, 6. September 2022, 12:30–12:45, H23

Improving device parameters in nanotube microwave optomechanics — Nicole Kellner, •Fabian Stadler, Niklas Hüttner, and Andreas K. Hüttel — Institute for Experimental and Applied Physics, Universität Regensburg, Regensburg, Germany

In recent work [1,2], we have demonstrated optomechanical coupling between a carbon nanotube with an embedded quantum dot and a coplanar microwave resonator. The experiment displayed enhancement of the coupling by several orders of magnitude via the nonlinearity of Coulomb blockade. The resulting novel optomechanical system can have figures of merit close to several interesting parameter regimes, as, e.g., strong optomechanical coupling (with hybridization of vibrons and photons) and the quantum coherent limit (where manipulation is faster than thermal decoherence). With this in mind, here we discuss our ongoing work to improve the components of this system, the optomechanical coupling, and its adressing and readout. — [1] S. Blien et al., Nat. Comm. 11, 1636 (2020); [2] N. Hüttner et al., in preparation.