Radar Measurements of the Vibration Amplitude

Запевалов, А. С.; Pinchuk, Alexander; Burdyugov, V. M.

doi:10.1134/s1063784218120216

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…While, from the phase spectrum we have φ(ω d ) = π/2 for ω d = ω b , which is independent of the dissipation of the HO. Next, two categories: (1) coupling it directly to the sensor 19,32 , and (2) using the remote radio-wave or optical interferometries [33][34][35] , are usually applied to detect the vibrational displacement of the HO. However, various unavoidable noises, typically such a the stochastic force ξ(t) , limit the sensitivity of these displacement detections.…”

Section: Methodsmentioning

confidence: 99%

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

Wei

2023

Sci Rep

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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.

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Section: Methodsmentioning

confidence: 99%

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

Wei

2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…While, from the phase spectrum we have φ (ω d ) = π/2 for ω d = ω b , which is independent of the dissipation of the HO. Next, two categories: (i) coupling it directly to the sensor 32,33 , and (ii) using the remote radio-wave or optical interferometries [34][35][36] , are usually applied to detect the vibrational displacement of the HO. However, various unavoidable noises, typically such a the stochastic force ξ (t), limit the sensitivity of these displacement detections.…”

Section: Methodsmentioning

confidence: 99%

“…( 32) reduces to Ĥq in Eq. ( 5), then the generic solution of the Schrödinger equation (36), with Hamiltonian (32), can be written as…”

Section: The Qubit Eigenfrequency Measurementmentioning

confidence: 99%

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

Wei

2022

Preprint

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Radar Measurements of the Vibration Amplitude

Cited by 2 publications

References 2 publications

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

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

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

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