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TT: Fachverband Tiefe Temperaturen
TT 18: Nano- and Optomechanics
TT 18.2: Vortrag
Montag, 27. März 2023, 17:30–17:45, HSZ 201
Squeezed mechanical states in nano-electromechanical systems — •Korbinian Rubenbauer1,2,3, Thomas Luschmann1,2,3, Rudolf Gross1,2,3, and Hans Huebl1,2,3 — 1Walther-Meißner-Institut, Bayrische Akademie der Wissenschaften, Garching, Germany — 2Technical University of Munich, TUM School of Natural Sciences, Physics Department, 85748 Garching, Germany — 3Munich Center for Quantum Science and Technologies, Munich, Germany
The generation of nonclassical quantum states in a mechanical system such as squeezed states is not only an essential milestone for quantum-enhanced sensing of ultra-small forces and accelerations, but will also enhance our understanding of the foundations of quantum theory. Optomechanical systems coupling a mechanical displacement to a microwave resonator represent one way to implement protocols resulting in squeezed mechanical states and their readout. Here, we experimentally explore a scheme for the generation and detection of squeezed mechanical states using microwave control and spectroscopy of a nano-electromechanical system. In detail, we investigate a system based on a nanomechanical string resonator inductively coupled via a SQUID to a superconducting microwave resonator. Within this presentation, we discuss the challenges regarding the experimental implementation and the required parameter regime, and present preliminary experimental data.