Quantum positioning and ranging via a distributed sensor network  

作　　者：XIAOCONG SUN WEI LI YUHANG TIAN FAN LI LONG TIAN YAJUN WANG YAOHUI ZHENG 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-Electronics,Shanxi University,Taiyuan 030006,China [2]Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China

出　　处：《Photonics Research》2022年第12期2886-2892,共7页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(62225504,62027821,11874250,12174234,12274275,62035015);National Key Research and Development Program of China(2020YFC2200402);Key R&D Program of Shanxi(202102150101003);Program for Sanjin Scholar of Shanxi Province。

摘　　要：A quantum sensor network with multipartite entanglement offers a sensitivity advantage in optical phase estimation over the classical scheme.To tackle richer sensing problems,we construct a distributed sensor network with four nodes via four partite entanglements,unveil the estimation of the higher order derivative of radiofrequency signal phase,and unlock the potential of quantum target ranging and space positioning.Taking phased-array radar as an example,we demonstrate the optimal quantum advantages for space positioning and target ranging missions.Without doubt,the demonstration that endows innovative physical conception opens up widespread application of quantum sensor networks.

关 键 词：QUANTUM ESTIMATION DERIVATIVE 

分 类 号：O413[理学—理论物理] TP212.9[理学—物理]