Improving the cooling performance of a mechanical resonator with two-level-system defects

@article{Chen2014ImprovingTC,
  title={Improving the cooling performance of a mechanical resonator with two-level-system defects},
  author={Tian Chen and Xiang‐Bin Wang},
  journal={Bulletin of the American Physical Society},
  year={2014},
  volume={2015}
}
  • Tian Chen, Xiang‐Bin Wang
  • Published 3 June 2014
  • Engineering, Physics, Materials Science
  • Bulletin of the American Physical Society
We study cooling performance of a realistic mechanical resonator containing defects. The normal cooling method through an optomechanical system does not work efficiently due to those defects. We show by employing periodical $\sigma_z$ pulses, we can eliminate the interaction between defects and their surrounded heat baths up to the first order of time. Compared with the cooling performance of no $\sigma_z$ pulses case, much better cooling results are obtained. Moreover, this pulse sequence has… 
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