Coaxing vibrations in the regimes of both large mass and high temperature into their motional quantum ground states is extremely challenging, because it requires an ultra-high optical power, which introduces extraneous excessive heating and intricate instabilities. Here we propose how to overcome these obstacles and cool vibrational networks by simply harnessing the power of an exceptional point (EP) induced in parity-time symmetric structures; and we reveal its exceptional cooling properties otherwise unachievable in conventional devices. In stark contrast to standard-cooling protocols, a three orders-of-magnitude amplification in net cooling rates arises from the EP-cooling mechanism, without which it vanishes. Remarkably, our EP cooling is nearly immune to both resonator mass and environmental temperature, and this overthrows the consensus that poor intrinsic factors and rugged extrinsic environment suppress cooling channels. Our study offers the possibility of isolating and engineering motional properties of large-mass and high-temperature objects for various applications in optical and acoustic sensing, gravimetry, and inertial navigation.

中文翻译：

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超越其质量和温度限制的卓越运动制冷

将大质量和高温状态下的振动诱导到运动量子基态是极具挑战性的，因为它需要超高的光功率，这会引入额外的过度加热和复杂的不稳定性。在这里，我们提出如何通过简单地利用宇称时间对称结构中引入的异常点（EP）的力量来克服这些障碍并冷却振动网络；我们展示了其传统设备无法实现的卓越冷却性能。与标准冷却协议形成鲜明对比的是，EP 冷却机制使净冷却速率放大了三个数量级，如果没有这种机制，净冷却速率就会消失。值得注意的是，我们的 EP 冷却几乎不受谐振器质量和环境温度的影响，这推翻了不良内在因素和恶劣的外部环境抑制冷却通道的共识。我们的研究为光学和声学传感、重力测量和惯性导航等各种应用提供了隔离和设计大质量高温物体运动特性的可能性。