Multi-order phononic frequency comb generation within a MoS2electromechanical resonator

Document Type

Article

Publication Date

10-25-2021

Abstract

In this work, we measure and tune simultaneously the vibration of a 1-nm thick MoS2 suspended monolayer with standard electrical excitation and optical techniques. At ambient temperature, we first investigate the strong parametric coupling between two different mechanical modes (ω1 and ω2). We demonstrate a high and quasi-linear tunability of the mode frequencies with the parametric pump voltage. Then, we couple the highly tunable main vibration (ω1) to a parametric pump frequency (ωp) to obtain a high number of sidebands at frequencies ω1 ± m ωp, driving the mechanical mode with a large external electrical force. This oscillating force, applied via the gate voltage, acts as a stress onto the MoS2 sheet. The obtained frequency comb has a large spectral band and contains up to 100 harmonics, with potential applications in quantum information processing and heat or sound transport.

Identifier

85118440402 (Scopus)

Publication Title

Applied Physics Letters

External Full Text Location

https://doi.org/10.1063/5.0059015

ISSN

00036951

Issue

17

Volume

119

Grant

ANR-19-CE24-0021

Fund Ref

Nanjing Institute of Technology

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