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Efficient and reversible optical-to-spin conversion for solid-state quantum memories

delete2025-04-11
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PRE
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J
Jingjing Chen
M
Mikael Afzelius *
DOI:10.1088/2058-9565/adc7d3delete
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摘要

摘要

En 中文
长寿命且高效的量子存储器是量子中继器和网络应用的关键组件。为在原子系统中实现长寿命存储,可将短寿命的光学相干映射为长寿命的自旋相干,这构成了许多量子存储方案的基础。在本工作中,我们展示了原子频率梳(AFC)存储器中光-自旋转换的往返(即可逆)过程的建模与测量。该AFC存储器在151Eu3+:Y2SiO5中实现,施加了231 mT的磁场,以抑制转换效率中的时域干扰效应。通过使用开发的仿真工具优化转换过程,实验上我们实现了总效率高达96%(包括自旋回波序列和自旋退相干),存储时间为500 μs。我们的方法和结果为在151Eu3+:Y2SiO5中实现毫秒时间尺度下单光子态的长寿命、高信噪比存储铺平了道路。
Keyword:
quantum repeater
quantum memory
rare-earth ion crystals
atomic frequency comb

期刊

Quantum Science and Technology 封面图
Quantum Science and Technology
IF:
5
论文数:
1.4K
被引数:
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机构

U
Univ Geneva
学者数:
960
论文数: 502
被引数: 180
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