Shortcuts to dynamic polarization
Shortcuts to dynamic polarization
复制标题
DOI：
10.1103/physrevb.103.075118
复制
发表时间：
2020-11
影响因子：
3.7
通讯作者：
Tamiro Villazon;P. W. Claeys;A. Polkovnikov;A. Chandran
中科院分区：
文献类型：
--
作者：
Tamiro Villazon;P. W. Claeys;A. Polkovnikov;A. Chandran
动态极化协议旨在通过从控制良好的量子比特转移自旋极化来超极化自旋池。基于从捷径到绝热的技术，作者在中心自旋模型中表征和设计了有效的动态极化协议。这些协议通过局部反绝热驱动最大限度地实现了通过亮态的偏振转移，有效地减少了暗态的布居，并且可以在满足速度限制的情况下通过Floquet工程实验实现。
Dynamic polarization protocols aim to hyperpolarize a spin bath by transferring spin polarization from a well-controlled qubit. Building on techniques from shortcuts to adiabaticity, the authors characterize and design efficient dynamic polarization protocols in central spin models. These protocols maximize the transfer of polarization via bright states through local counterdiabatic driving, efficiently depopulate dark states, and can be experimentally realized through Floquet engineering provided a speed limit is satisfied.