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Gradient Echo Quantum Memory in Warm Atomic Vapor
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通过增强记忆的量子通信的实验演示
M K Bhaskar1, R Riedinger1, B Machielse1
1Department of Physics, Harvard University, Cambridge, MA, USA.
Nature
|April 3, 2020
概括
研究人员使用固态自旋记忆器开发了量子重复器组件. 这一突破使得量子通信速度更快,距离更远,为先进的量子网络铺平了道路.
科学领域:
- 量子信息科学
- 量子通信工程
- 固态物理
背景情况:
- 长途量子通信至关重要, 但受到光子损失的限制.
- 目前的量子密钥分布有范围的限制.
- 量子重复器是必要的, 但在技术上具有挑战性.
研究的目的:
- 实现一个量子重复器的关键组件.
- 为了证明高准确度的量子通信在扩展范围.
- 推进实用的量子网络的发展.
主要方法:
- 在纳米光子钻石共振器中使用单一固态自旋记忆器.
- 实现了异步光子贝尔状态测量.
- 进行了一项原则证明实验.
主要成果:
- 实现了量子重复器组件的高保真性操作.
- 证明量子通信速度超过理想的直接传输.
- 运行在兆赫的时钟速度.
结论:
- 开发的组件是实现实用的量子重复器的关键一步.
- 这项工作提升了大规模量子网络的可行性.
- 对于未来的量子通信来说, 高可靠性固态量子记忆是关键.
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