Combined effect of mutually frequency-detuned strong and weak drives on a two-level system: Envelope of the Rabi oscillations
arXiv:2305.01136 · doi:10.1016/j.physleta.2023.128953
Abstract
Near-resonant ac-drive acting on a two-level system induces the Rabi oscillations of the level occupations. It is shown that additional weak drive properly frequency-detuned from the primary drive causes a resonant response. This response manifests itself in the emergence of the envelope of the oscillations. At resonance, the inverse period of the envelope is proportional to the amplitude of the weak drive. The resonant condition reads: difference of frequencies between the two drives is equal to the ac-splitting of quasilevels in the field of the strong drive. Technically, the resonance can be inferred from the analogy between the equations for the time-evolution of the spin amplitude and the Mathieu equation, which describes e.g. the parametric resonance.
5 pages, 1 figure
References in corpus (5)
- Relaxation, decoherence and steady-state population inversion in qubits doubly dressed by microwave and radiofrequency fields
- Magnetic resonance in slowly modulated longitudinal field: Modified shape of the Rabi oscillations
- Multiplication of Qubits in a Doubly Resonant Bichromatic Field
- Higher-order geometric phase for qubits in a bichromatic field
- Dissipative dynamics of qubits driven by a bichromatic field in the dispersive regime