Low Noise Opto-Electro-Mechanical Modulator for RF-to-Optical Transduction in Quantum Communications
Michele Bonaldi (Trento Institute for Fundamental Physics and Applications, Institute of Materials for Electronics and Magnetism - Nanoscience-Trento-FBK Division)
Antonio Borrielli (Trento Institute for Fundamental Physics and Applications, Institute of Materials for Electronics and Magnetism - Nanoscience-Trento-FBK Division)
Giovanni Di Giuseppe (University of Camerino, Istituto Nazionale di Fisica Nucleare - Sezione di Perugia)
Nicola Malossi (Istituto Nazionale di Fisica Nucleare - Sezione di Perugia, University of Camerino)
Bruno Morana (TU Delft - EKL Equipment)
Riccardo Natali (University of Camerino, Istituto Nazionale di Fisica Nucleare - Sezione di Perugia)
Paolo Piergentili (Istituto Nazionale di Fisica Nucleare - Sezione di Perugia, University of Camerino)
Pasqualina Maria Sarro (TU Delft - Electronic Components, Technology and Materials)
Enrico Serra (TU Delft - Electronic Components, Technology and Materials, Trento Institute for Fundamental Physics and Applications)
David Vitali (Istituto Nazionale di Fisica Nucleare - Sezione di Perugia, University of Camerino, Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche)
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Abstract
In this work, we present an Opto-Electro-Mechanical Modulator (OEMM) for RF-to-optical transduction realized via an ultra-coherent nanomembrane resonator capacitively coupled to an rf injection circuit made of a microfabricated read-out able to improve the electro-optomechanical interaction. This device configuration can be embedded in a Fabry–Perot cavity for electromagnetic cooling of the LC circuit in a dilution refrigerator exploiting the opto-electro-mechanical interaction. To this aim, an optically measured steady-state frequency shift of 380 Hz was seen with a polarization voltage of 30 V and a Q-factor of the assembled device above (Formula presented.) at room temperature. The rf-sputtered titanium nitride layer can be made superconductive to develop efficient quantum transducers.
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