Fast cooling for a system of stochastic oscillators

Fast cooling for a system of stochastic oscillators
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随机振荡器系统的快速冷却

DOI:
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发表时间:
2014
期刊:
arXiv.org
影响因子:
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通讯作者:
M. Pavon
M. Pavon
中科院分区:
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文献类型:
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作者:
Yongxin Chen;T. Georgiou;M. Pavon

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We study feedback control of coupled nonlinear stochastic oscillators in a force field. We first consider the problem of asymptotically driving the system to a desired steady state corresponding to reduced thermal noise. Among the feedback controls achieving the desired asymptotic transfer, we find that the most efficient one from an energy point of view is characterized by time-reversibility. We also extend the theory of Schrodinger bridges to this model, thereby steering the system in finite time and with minimum effort to a target steady-state distribution. The system can then be maintained in this state through the optimal steady-state feedback control. The solution, in the finite-horizon case, involves a space-time harmonic function φ, and −logφ plays the role of an artificial, time-varying potential in which the desired evolution occurs. This framework appears extremely general and flexible and can be viewed as a considerable generalization of existing active control strategies such as macromolecula...
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发表时间: 2019
影响因子: 6.8
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