论文标题
量子应用的无腐烂旋转自由度
Decoherence-Free Rotational Degrees of Freedom for Quantum Applications
论文作者
论文摘要
我们采用球形$ t $ designs来系统地构造固体，其旋转自由度可以使旋转的自由度稳固，因为外部波动磁场，同时保持其对感兴趣信号的敏感性。具体而言，通过使用日益复杂的形状，可以将信号相累积速率从附近的源到由较远来源的波动磁场引起的脱位率的比率增加到任何所需的水平。这允许生成旋转自由度的长期宏观量子叠加，并在两个或多个此类固体之间生成强大的纠缠，并在鲁棒的量子传感和精度计量学以及量子注册中应用。
We employ spherical $t$-designs for the systematic construction of solids whose rotational degrees of freedom can be made robust to decoherence due to external fluctuating fields while simultaneously retaining their sensitivity to signals of interest. Specifically, the ratio of signal phase accumulation rate from a nearby source to the decoherence rate caused by fluctuating fields from more distant sources can be incremented to any desired level by using increasingly complex shapes. This allows for the generation of long-lived macroscopic quantum superpositions of rotational degrees of freedom and the robust generation of entanglement between two or more such solids with applications in robust quantum sensing and precision metrology as well as quantum registers.
