室温下的量子启发微波相超分辨率

IF 3.8 2区物理与天体物理 Q2 PHYSICS, APPLIED

Physical Review Applied Pub Date : 2024-09-04 DOI:10.1103/physrevapplied.22.034008

Leonid Vidro, Liran Shirizly, Naftali Kirsh, Nadav Katz, Hagai S. Eisenberg

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引用次数: 0

摘要

量子计量学已被证明超越了相关性、分辨率和灵敏度的传统极限。它已被引入干涉雷达方案，并取得了引人入胜的初步成果。即使是量子启发的经典信号检测，也可能在特定的应用案例中具有优势。根据迄今为止只在光学领域（实际上不存在热背景光子）展示过的想法，我们实现了室温微波频率超分辨相位测量，光子数以万亿计，同时灵敏度的克拉默-拉奥约束达到饱和。我们通过两种方法利用奇偶算子的期望值对干涉相位进行了实验估算。我们利用 25-ns 的积分时间和 56-dB 的信噪比实现了比波长高 1200 倍的超分辨率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Quantum-inspired microwave phase superresolution at room temperature

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Quantum-inspired microwave phase superresolution at room temperature

Quantum metrology has been shown to surpass classical limits of correlation, resolution, and sensitivity. It has been introduced to interferometric radar schemes, with intriguing preliminary results. Even quantum-inspired detection of classical signals may be advantageous in specific use cases. Following ideas demonstrated so far only in the optical domain, where practically no thermal background photons exist, we realize room-temperature microwave frequency super-resolved phase measurements with trillions of photons, while saturating the Cramer-Rao bound of sensitivity. We experimentally estimate the interferometric phase using the expectation value of the parity operator by two methods. We achieve superresolution up to 1200 times better than the wavelength with 25-ns integration time and 56-dB SNR.

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来源期刊

Physical Review Applied PHYSICS, APPLIED-

CiteScore

7.80

自引率

8.70%

发文量

760

审稿时长

2.5 months

期刊介绍： Physical Review Applied (PRApplied) publishes high-quality papers that bridge the gap between engineering and physics, and between current and future technologies. PRApplied welcomes papers from both the engineering and physics communities, in academia and industry. PRApplied focuses on topics including: Biophysics, bioelectronics, and biomedical engineering, Device physics, Electronics, Technology to harvest, store, and transmit energy, focusing on renewable energy technologies, Geophysics and space science, Industrial physics, Magnetism and spintronics, Metamaterials, Microfluidics, Nonlinear dynamics and pattern formation in natural or manufactured systems, Nanoscience and nanotechnology, Optics, optoelectronics, photonics, and photonic devices, Quantum information processing, both algorithms and hardware, Soft matter physics, including granular and complex fluids and active matter.