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Demonstration of Entanglement-Enhanced Covert Sensing
Physical Review Letters ( IF 8.6 ) Pub Date : 2022-06-27 , DOI: 10.1103/physrevlett.129.010501
Shuhong Hao 1 , Haowei Shi 2 , Christos N Gagatsos 2 , Mayank Mishra 2 , Boulat Bash 2, 3 , Ivan Djordjevic 2, 3 , Saikat Guha 2, 3 , Quntao Zhuang 2, 3 , Zheshen Zhang 1, 2, 3
Affiliation  

The laws of quantum physics endow superior performance and security for information processing: quantum sensing harnesses nonclassical resources to enable measurement precision unmatched by classical sensing, whereas quantum cryptography aims to unconditionally protect the secrecy of the processed information. Here, we present the theory and experiment for entanglement-enhanced covert sensing, a paradigm that simultaneously offers high measurement precision and data integrity by concealing the probe signal in an ambient noise background so that the execution of the protocol is undetectable with a high probability. We show that entanglement offers a performance boost in estimating the imparted phase by a probed object, as compared to a classical protocol at the same covertness level. The implemented entanglement-enhanced covert sensing protocol operates close to the fundamental quantum limit by virtue of its near-optimum entanglement source and quantum receiver. Our work is expected to create ample opportunities for quantum information processing at unprecedented security and performance levels.

中文翻译:

纠缠增强隐蔽传感演示

量子物理定律赋予信息处理卓越的性能和安全性:量子传感利用非经典资源实现经典传感无法比拟的测量精度,而量子密码学旨在无条件地保护处理信息的机密性。在这里,我们介绍了纠缠增强隐蔽传感的理论和实验,这种范式通过将探测信号隐藏在环境噪声背景中来同时提供高测量精度和数据完整性,从而使协议的执行很有可能无法检测到。我们表明,与相同隐蔽性级别的经典协议相比,纠缠在估计被探测对象所赋予的相位方面提供了性能提升。实现的纠缠增强隐蔽传感协议凭借其近乎最佳的纠缠源和量子接收器,在接近基本量子极限的情况下运行。我们的工作有望以前所未有的安全性和性能水平为量子信息处理创造充足的机会。
更新日期:2022-06-27
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