论文标题
量子记忆应用的弱磁场下的非kramer稀土离子的光学和自旋操作
Optical and spin manipulation of non-Kramers rare-earth ions under weak magnetic field for quantum memory applications
论文作者
论文摘要
事实证明，稀土离子掺杂晶体是实现量子记忆的固体平台。它们对具有较大多重能力和前所未有的连贯性时间的集成光子学的潜在用途是它们吸引力的核心。但是，在受到直流磁场的约束时，通常可以获得这些离子的最佳性能，但是此类场对量子记忆方案的后果很少受到关注。在本文中，通过开发一个简单的理论模型，我们关注DC偏置磁场对具有自旋和光学域中的核四极态的非kramer离子的效果。我们将此模型应用于$ {}^{151} $ eu：y $ _2 $ sio $ _5 $ Crystal中的实验观察，并突出显示了AFC Spin-Wave协议的具体后果。开发的分析应允许预测各种协议的最佳磁场配置。
Rare-earth ion doped crystals have proven to be solid platforms for implementing quantum memories. Their potential use for integrated photonics with large multiplexing capability and unprecedented coherence times is at the core of their attractiveness. The best performances of these ions are however usually obtained when subject to a dc magnetic field, but consequences of such fields on the quantum memory protocols have only received little attention. In this article, we focus on the effect of a dc bias magnetic field on the population manipulation of non-Kramers ions with nuclear quadrupole states, both in the spin and optical domains, by developing a simple theoretical model. We apply this model to explain experimental observations in a ${}^{151}$Eu:Y$_2$SiO$_5$ crystal, and highlight specific consequences on the AFC spin-wave protocol. The developed analysis should allow to predict optimal magnetic field configurations for various protocols.
