在杂的随机电路中普遍传播有条件的相互信息.
Su-Un Lee1, Changhun Oh1,2, Yat Wong1
1Pritzker School of Molecular Engineering, <a href="https://ror.org/024mw5h28">The University of Chicago</a>, Chicago, Illinois 60637, USA.
Physical review letters
|December 3, 2024
概括
在杂的量子电路中,有条件的相互信息 (CMI) 超线性地传播,由于局部噪声和杂乱的单元,超出光而分离. 这种快速扩散在开放量子系统中遵循一个普遍的缩放定律.
科学领域:
- 量子信息科学 量子信息科学
- 凝聚物质物理学 凝聚物质物理学
- 统计力学 统计力学
背景情况:
- 在无声量子电路中,有条件的相互信息 (CMI) 在光内线性传播.
- 开放的量子系统对于理解现实世界的量子现象至关重要.
研究的目的:
- 研究CMI在杂的单维随机量子电路中的演变.
- 发现CMI在当地的噪音下传播的背后的机制.
- 确定CMI动态的普遍缩放规律.
主要方法:
- 分析带有局部噪声的一维随机电路.
- 引入粗粒法用于分析处理.
- 通过数值模拟进行验证.
主要成果:
- 噪音电路表现出超线性CMI传播,超过光.
- 在关键深度t_{c}p^{-1}上,CMI的分歧取决于误差率p.
- 局部噪声和杂乱单元通过保持远距离相关性来推动快速的CMI传播.
结论:
- 局部噪声和杂乱单元从根本上改变了量子电路中的CMI动态.
- 在这些开放的量子系统中,一个普遍的缩放定律控制着CMI的传播.
- 这些发现提供了对现实量子设备中的信息传播的见解.
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