论文标题
基于测量的非线性机械谐振器的冷却
Measurement-based cooling of a nonlinear mechanical resonator
论文作者
论文摘要
我们提出了两种基于测量的方案，以将非线性机械谐振器冷却至接近其基态的能量。这些协议依赖于自由度自由度的投影测量值，该测量通过Jaynes-Cummings的相互作用与谐振器相互作用。我们显示了这些冷却方案的性能，可以将其连接起来 - 即通过重复一系列动态演变而构建，然后进行投影测量 - 或单发。我们通过数值模拟表征了两种冷却方案的性能，并查明了逆转和噪声机制的影响。由于Jaynes-Cummings模型的普遍性和实验性相关性，我们认为我们的结果可以应用于各种实验设置中。
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.
