We propose two measurement-based schemes to cool a nonlinear mechanical resonator down to energies close to that of its ground state. The protocols rely on projective measurements of a spin degree of freedom, which interacts with the resonator through a Jaynes-Cummings interaction. We show the performance of these cooling schemes, that can be either concatenated - i.e., built by repeating a sequence of dynamical evolutions followed by projective measurements - or single-shot. We characterize the performance of both cooling schemes with numerical simulations and pinpoint the effects of decoherence and noise mechanisms. Due to the ubiquity and experimental relevance of the Jaynes-Cummings model, we argue that our results can be applied in a variety of experimental setups.
Puebla R., Abah O., Paternostro M. (2020). Measurement-based cooling of a nonlinear mechanical resonator. PHYSICAL REVIEW. B, 101(24) [10.1103/PhysRevB.101.245410].
Measurement-based cooling of a nonlinear mechanical resonator
Paternostro M.
2020-06-08
Abstract
We propose two measurement-based schemes to cool a nonlinear mechanical resonator down to energies close to that of its ground state. The protocols rely on projective measurements of a spin degree of freedom, which interacts with the resonator through a Jaynes-Cummings interaction. We show the performance of these cooling schemes, that can be either concatenated - i.e., built by repeating a sequence of dynamical evolutions followed by projective measurements - or single-shot. We characterize the performance of both cooling schemes with numerical simulations and pinpoint the effects of decoherence and noise mechanisms. Due to the ubiquity and experimental relevance of the Jaynes-Cummings model, we argue that our results can be applied in a variety of experimental setups.File | Dimensione | Formato | |
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