Ultrasensitive and real-time detection of chemical reaction rate based on the photonic spin Hall effect
Ruisi Wang,
Junxiao Zhou,
Kuiming Zeng,
Shizhen Chen,
Xiaohui Ling,
Weixing Shu,
Hailu Luo,
Shuangchun Wen
Affiliations
Ruisi Wang
Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
Junxiao Zhou
Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
Kuiming Zeng
Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
Shizhen Chen
Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
Xiaohui Ling
College of Physics and Electronic Engineering, Hengyang Normal University, Hengyang 421002, China
Weixing Shu
Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
Hailu Luo
Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
Shuangchun Wen
Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. However, the precise and real-time detection of the reaction rate remains challenging due to its fast and dynamical process. In this paper, the photonic spin Hall effect is proposed to realize the ultrasensitive and real-time detection of the reaction rate of sucrose hydrolysis. By incorporating with quantum weak measurement, the photonic spin-Hall shift acts as the measurement pointer, and the optical rotation in the process of sucrose hydrolysis acts as the postselection state. The high measurement resolution with 1.25 × 10−4 degree is achieved due to the weak-value amplification in quantum weak measurement which outperforms the standard polarimeter. In our scheme, the amplified measurement pointer is real-time monitoring the chemical reaction process. It does not involve any mechanical adjustment of optical elements once the experimental setup is established and thereby realizes a real-time detection of the dynamic chemical reaction.
