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在使用实时频率跟踪的单旋量子系统中,抑制热噪声到米基尔文以下的水平

Zhiyi Hu^1,2, Jingyan He², Runchuan Ye²

¹School of Microelectronics, Hefei University of Technology, Hefei 230009, China.

|July 27, 2024

概括

研究人员开发了一种新方法来稳定空 (NV) 中心的温度,显著改善了纳米级量子传感. 这种技术可以在没有复杂的冷却的情况下增强旋转状态读出对比度,从而实现更精确的测量.

科学领域:

量子传感是一种量子感应.
纳米科学是一个纳米科学.
钻石量子技术是一种钻石量子技术.

背景情况:

钻石中的单个空位 (NV) 中心是用于磁场,电场和核旋转的多功能纳米级传感器.
在NV中心的低光子检测效率导致长时间的检测时间,受到来自热噪声的电子自旋共振 (ESR) 频率波动的阻碍.
抑制热噪声对于提高NV传感器性能至关重要,但传统方法需要复杂而昂贵的毫克尔文级热控制.

研究的目的:

分析影响NV中心量子传感的实时热漂移.
开发一种积极的,具有成本效益的方法来稳定NV中心的ESR频率.
在长期基于NV的实验中,改进旋转状态读数对比度和整体性能.

主要方法:

在单旋转ESR频率中实时热漂移的分析.
实施一个主动跟踪方法来补偿频率漂移.
实验验证,不需要额外的环境温度控制装置.

主要成果:

达到温度稳定效果相当于亚毫克尔文 (0.8mK) 的水平.
在长期实验中显著改善了自旋状态读数对比度.
展示了一种绕过复杂,昂贵冷系统的方法.

结论:

开发的主动跟踪方法有效地抑制了NV中心传感中的热噪声和漂移.
这种技术提供了一种实用且广泛适用的解决方案,用于提高基于NV的量子传感性能.
该方法显示了扩展到其他纳米级量子传感应用的潜力.

关键词:

在NV中心NV中心.反控制反的控制方法实时频率跟踪实时频率跟踪旋转操纵旋转操纵热噪声抑制热噪声抑制

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