论文标题
连续光机械系统的动态布里渊冷却
Dynamic Brillouin cooling for continuous optomechanical systems
论文作者
论文摘要
通常，在光学耗散高于机械耗散的状态下，使用光力相互作用进行基态冷却。在这里，我们证明，通过使用向后的布里鲁因散射，可以在连续的光力系统中进行光学机械基态冷却，而机械耗散超过了光学耗散，这在光学波导中是常见的情况。通过通过脉冲泵调节光机电耦合的强度以抑制强耦合方案中的加热过程，可以在反stokes向后的布里鲁因过程中实现冷却。通过这种动态调制，可以实现具有几个数量级的冷却因子，这打破了稳态冷却极限。该调制方案也可以应用于前向上模式的布里鲁因散射产生的布里鲁因冷却。
In general, ground state cooling using optomechanical interaction is realized in the regime where optical dissipation is higher than mechanical dissipation. Here, we demonstrate that optomechanical ground state cooling in a continuous optomechanical system is possible by using backward Brillouin scattering while mechanical dissipation exceeds optical dissipation which is the common case in optical waveguides. The cooling is achieved in an anti-Stokes backward Brillouin process by modulating the intensity of the optomechanical coupling via a pulsed pump to suppress heating processes in the strong coupling regime. With such dynamic modulation, a cooling factor with several orders of magnitude can be realized, which breaks the steady-state cooling limit. This modulation scheme can also be applied to Brillouin cooling generated by forward intermodal Brillouin scattering.
