相关实验视频
Updated: Jan 8, 2026

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Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 11, 2013
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长期存储一个量子位的编码在无脱节的子空间使用双类型的量子内存
1Tsinghua University, Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Beijing 100084, People's Republic of China.
Physical review letters
|December 19, 2025
概括
研究人员使用冷陷开发了一种多离子量子内存,在纠状态下实现了超过两小时的连贯时间. 这一进步克服了以前用于量子信息存储的单量子比特系统的局限性.
科学领域:
- 量子信息科学 量子信息科学
- 原子,分子和光学物理学
- 量子计算和网络化 量子计算和网络化
背景情况:
- 量子内存对于量子计算,网络和计量学至关重要.
- 以前的双种量子内存实现了~1小时的连贯性,但由于离子位置跳跃,仅限于单个量子比特.
- 室温陷和不同的离子质量阻碍了可扩展性和稳定性.
研究的目的:
- 为了证明可扩展的多离子量子内存具有延长的连贯时间.
- 克服单量子比特存储在双种量子记忆系统中的局限性.
- 探索冷陷和相同质量的离子的潜力,以提高量子记忆性能.
主要方法:
- 在冷环境中实施了双类型离子陷方案.
- 使用冷却液离子对同质量的记忆离子进行交感冷却.
- 编码的量子比特处于无脱凝的两离子纠状态.
- 对于占主导地位的泄漏错误应用了错误纠正.
主要成果:
- 实现了多离子量子内存,其连贯时间超过两个小时.
- 展示了量子比特存储在一个无脱节的子空间中的纠状态.
- 通过使用冷陷和相同质量的离子来克服离子位置跳跃的问题.
- 消除了对存储量子比特的超稳定频率参考的需求.
结论:
- 低温双类型方案为多离子量子内存提供了一个可扩展和稳定的平台.
- 这项工作显著提升了量子信息的连贯时间和存储能力.
- 开发的量子内存是未来量子技术的一个有前途的基石.
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