Abstract
We report on the quantitative experimental illustration of elementary optomechanics within the classical regime. All measurements are performed in a commercial dilution refrigerator on a mesoscopic drumhead aluminium resonator strongly coupled to a microwave cavity, using only strict single-tone schemes. Sideband asymmetry is reported using in-cavity microwave pumping, along with noise squashing and back-action effects. Results presented in this paper are analysed within the simple classical electric circuit theory, emphasizing the analogous nature of classical features with respect to their usual quantum description. The agreement with theory is obtained with no fitting parameters. Besides, based on those results a simple method is proposed for the accurate measurement of the ratio between microwave internal losses and external coupling.
Highlights
Cryogenic microwave technologies are widely used in applications dealing with superconducting quantum bits and quantum computing [1, 2], which are today investigated in a continuously expanding number of laboratories
We report on the quantitative experimental illustration of elementary optomechanics within the classical regime
Microwave optomechanics could lead to new components for conventional electronics, and experiments already demonstrated the feasibility of room temperature devices [11]
Summary
Cryogenic microwave technologies are widely used in applications dealing with superconducting quantum bits and quantum computing [1, 2], which are today investigated in a continuously expanding number of laboratories. Microwave nano-electro-mechanical systems (NEMS) are promising devices for such applications in quantum data processing [3, 4]. Such elements, which are based on the coupling of electro-magnetic waves with mechanical motion [5], are proposed as new (quantum-limited) electric components [6] or new (quantum-limited) sensors [7]. This principle was already foreseen in the 80s by Caves and Braginsky [8, 9], and gravitational wave detection is based on the fantastic sensitivity of opto-mechanics for motion detection [10]. The classical electric circuit modeling has been derived [12], which gives them the required tools for basic understanding and modeling of optomechanics
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