On-chip quantum NOON state sensing for temperature and humidity  

作　　者：Weihong Luo Chao Wu Yuxing Du Chang Zhao Miaomiao Yu Pingyu Zhu Kaikai Zhang Ping Xu 罗伟宏;吴超;杜昱星;赵畅;余苗苗;朱枰谕;张凯凯;徐平(Institute for Quantum Information&State Key Laboratory of High Performance Computing,College of Computer Science and Technology,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]Institute for Quantum Information&State Key Laboratory of High Performance Computing,College of Computer Science and Technology,National University of Defense Technology,Changsha 410073,China

出　　处：《Chinese Physics B》2024年第10期15-20,共6页中国物理B（英文版）

基　　金：supported by the National Key R&D Program of China(Grant No.2022YFF0712800);Innova-tion Program for Quantum Science and Technology(Grant No.2021ZD0301500).

摘　　要：A maximal photon number entangled state,namely NOON state,can be adopted for sensing with a quantum enhancedprecision.In this work,we designed silicon quantum photonic chips containing two types of Mach-Zehnder interferometerswherein the two-photon NOON state,sensing element for temperature or humidity,is generated.Compared with classicallight or single photon case,two-photon NOON state sensing shows a solid enhancement in the sensing resolution andprecision.As the first demonstration of on-chip quantum photonic sensing,it reveals the advantages of photonic chips forhigh integration density,small-size,stability for multiple-parameter sensing serviceability.A higher sensing precision isexpected to beat the standard quantum limit with a higher photon number NOON state.

关 键 词：quantum sensing NOON state photonic chip 

分 类 号：O431.2[机械工程—光学工程] TP212[理学—光学]