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arXiv 2201.10934quant-ph
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噪声量子陀螺仪

Noisy quantum gyroscope

Lin Jiao, Jun-Hong An

摘要:

陀螺旋转敏感器在惯性导航系统中起着关键作用。利用量子资源研制出比传统陀螺仪更高精度的陀螺仪已引起人们的广泛关注。然而,现有的量子陀螺仪方案在退相干的影响下遭受严重的恶化,这被称为噪声计量学的不通过定理。利用两个量子化光场作为量子探针,提出了一种量子陀螺方案。我们对非马尔可夫噪声的精确分析表明,当每个光场与其环境形成束缚态时,作为增强灵敏度资源的演化时间和无噪情况下达到的超海森堡极限都是渐进可恢复的。研究结果为在实际噪声环境中实现高精度旋转传感提供了指导。

英文摘要:

Gyroscope for rotation sensing plays a key role in inertial navigation systems. Developing more precise gyroscopes than the conventional ones bounded by classical shot-noise limit by using quantum resources has attracted much attention. However, existing quantum gyroscope schemes suffer severe deterioration under the influence of decoherence, which is called the no-go theorem of noisy metrology. Here, by using two quantized optical fields as quantum probe, we propose a quantum gyroscope scheme breaking through the constraint of the no-go theorem. Our exact analysis of the non-Markovian noise reveals that both the evolution time as a resource in enhancing the sensitivity and the achieved super-Heisenberg limit in the noiseless case are asymptotically recoverable when each optical field forms a bound state with its environment. The result provides a guideline for realizing high-precision rotation sensing in realistic noisy environments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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