A microwave scattering spectral method to detect the nanomechanical vibrations embedded in a superconducting qubit

Nanomechanical resonators (NMRs), as the quantum mechanical sensing probers, have played the important roles for various high-precision quantum measurements. Differing from the previous emission spectral probes (i.e., the NMR modified the atomic emission), in this paper we propose an alternative app...

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Bibliographic Details
Published in:Scientific reports 2023-03, Vol.13 (1), p.4340-4340, Article 4340
Main Authors: Gao, H. Y., Wei, L. F.
Format: Article
Language:English
Subjects:
639/766/483/640
639/925/927
Emission measurements
Humanities and Social Sciences
Microwaves
multidisciplinary
Radio communications
Science
Science (multidisciplinary)
Vibration
Vibrations
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Summary:Nanomechanical resonators (NMRs), as the quantum mechanical sensing probers, have played the important roles for various high-precision quantum measurements. Differing from the previous emission spectral probes (i.e., the NMR modified the atomic emission), in this paper we propose an alternative approach, i.e., by probing the scattering spectra of the quantum mechanical prober coupled to the driving microwaves, to characterize the physical features of the NMR embedded in a rf-SQUID based superconducting qubit. It is shown that, from the observed specifical frequency points in the spectra, i.e., either the dips or the peaks, the vibrational features (i.e., they are classical vibration or quantum mechanical one) and the physical parameters (typically such as the vibrational frequency and displacements) of the NMR can be determined effectively. The proposal is feasible with the current technique and should be useful to design the desired NMRs for various quantum metrological applications.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-30914-3