ABSTRACT A mass sensing scheme is theoretically proposed based on a hybrid phonon‐qubit‐photon‐magnon system. The system is composed of a nanomechanical resonator, a flux qubit, a coplanar waveguide cavity, and a yttrium iron garnet sphere, where the qubit is driven by a strong pumping field and a weak probe field. By employing the all‐optical detection technique, the resonant frequency shift induced by molecular deposition is detected, and the mass of the target particles is determined based on its relationship with the additional mass. We investigated the effect of relevant parameters on the mass sensing sensitivity. The results show that spectral variations can be easily detected by adjusting the cavity‐magnon coupling strength, the decay rate of NAMR, and the Rabi frequency. Furthermore, a nonlinear mass sensing scheme is proposed via the Kerr coefficient spectrum based on this hybrid system. Such performance provides a versatile platform for applications in biological molecule sensing and broader nanomechanical research.
Liao et al. (Sun,) studied this question.