Interference-based multimode opto-electro-mechanical transducers

Year: 2018

Authors: Haghigh I.M., Malossi N., Natali R., Di Giuseppe G., Vitali D.

Autors Affiliation: [Haghigh, I. Moaddel; Malossi, N.; Natali, R.; Di Giuseppe, G.; Vitali, D.] Univ Camerino, Via Madonna delle Carceri 9, Camerino, MC, Italy.
[Malossi, N.; Natali, R.; Di Giuseppe, G.; Vitali, D.] INFN, Sez Perugia, Perugia, Italy.
[Vitali, D.] CNR INO, Lgo Enrico Fermi 6, I-50125 Florence, Italy.

Abstract: As recently demonstrated [T. Bagci, et al., Nature 507, 81 (2013)], an opto-electro-mechanical system formed by a nanomembrane, capacitively coupled to an LC resonator and to an optical interferometer, may be employed for the high-sensitive optical readout of rf signals. Here we show through a proof of principle device how the bandwidth of such kind of transducer can be increased by controlling the interference between the electromechanical interaction pathways of a two-mode mechanical system. The transducer reaches a sensitivity of 10 nV/Hz(1/2) over a bandwidth of 5 kHz and a broader band sensitivity of 300 nV/Hz(1/2) over a bandwidth of 15 kHz. We discuss strategies for improving the performance of the device, showing that, for the same given sensitivity, a mechanical multi-mode transducer can achieve a bandwidth significantly larger than that of a single-mode one.
Accession Number: WOS:000454217900003

Conference title: Conference on Quantum Technologies

KeyWords: Opto-mechanics; Electro-mechanics; transducer