Regensburg 2022 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 29: Transport: Poster Session
TT 29.11: Poster
Donnerstag, 8. September 2022, 15:00–18:00, P1
Inductive coupling schemes in nano-electromechanics — •Lukas Niekamp1,2, Thomas Luschmann1,2,3, Philip Schmidt1,2, Frank Deppe1,2,3, Achim Marx1, Rudolf Gross1,2,3, and Hans Huebl1,2,3 — 1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany — 2Physik-Department, Technische Universität München, 85748 Garching, Germany — 3Munich Center for Quantum Science and Technology, 80799 Munich
Nano-electromechanics studies the opto-mechanical interaction between microwave frequency resonators and mechanical components in the nanometer regime. Recently, the concept of inductive coupling has been demonstrated, allowing for the modulation of the resonator frequency by the mechanical displacement [1, 2]. This coupling scheme results in higher vacuum opto-mechanical coupling rates compared to previous capacitive coupling schemes. Therefore, devices based on inductive coupling are considered as potential pathway for realizing vacuum strong-coupling. This regime allows to harness the full nonlinearity of the optomechanical interaction offering opportunities like the generation of mechanical quantum states. The device presented here consists of a flux-tunable dc-SQUID with mechanically compliant strings integrated into a microwave resonator. The mechanical displacement of the strings modulates the external flux and hence the microwave resonator’s frequency. Here, we present recent experiments on the path to strong photon-phonon interaction.
[1] Rodrigues, Bothner, Steele, Nat. Commun. 10, 5359 (2019)
[2] Schmidt et al., Commun. Phys. 3, 233 (2020)