论文标题
室温下PT对称型宏观力学系统中雄伟的谐振器的基态冷却
Ground state cooling of magnomechanical resonator in PT-symmetric cavity magnomechanical system at room temperature
论文作者
论文摘要
我们建议在平均时间（PT） - 对称腔机械系统中实现宏伟谐振器的基态冷却，该系统由损失铁磁球和增益微波炉组成。在该方案中，可以通过宏伟的相互作用将宏伟的谐振器冷却在其基态附近，并且发现PT对称系统中的冷却效果远高于非对称系统中的冷却效果。诉诸于磁力噪声频谱时，我们使用实验可行的参数研究了最终的平均声子数，并令人惊讶地发现，可以在室温下直接实现雄伟谐振器的基态冷却。此外，我们还说明可以通过外部磁场灵活控制基态冷却。
We propose to realize the ground state cooling of magnomechanical resonator in a parity-time (PT)-symmetric cavity magnomechanical system composed of a loss ferromagnetic sphere and a gain microwave cavity. In the scheme, the magnomechanical resonator can be cooled close to its ground state via the magnomechanical interaction, and it is found that the cooling effect in PT-symmetric system is much higher than that in non-PT-symmetric system. Resorting to the magnetic force noise spectrum, we investigate the final mean phonon number with experimentally feasible parameters and find surprisingly that the ground state cooling of magnomechanical resonator can be directly achieved at room temperature. Furthermore, we also illustrate that the ground state cooling can be flexibly controlled via the external magnetic field.
