Schematic diagram of the magnetic interactions between a mechanical resonator and an electronic spin qubit in the presence of a strong microwave pump field and a weak microwave probe field. The inset is an energy-level diagram of a spin qubit.
The absorption spectrum of a microwave probe field without ( ) and with ( , 30, 50(kHz)) the coupling between a spin qubit and a nanomechanical resonator for the case , and .
(a) The absorption spectrum of a microwave probe field in the presence of a strong microwave pump field for the case , and . (b) The new features in the spectrum shown in (a) are identified by the corresponding transition between the dressed states of spin qubit.
The absorption spectrum of a microwave probe field as a function of the detuning of the microwave probe field from the spin resonance for four different coupling strengths. The other parameters used are , and . The inset is the splitting of two peaks as a function of the coupling strength.
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