Feedback control for manipulating magnetization in spin-exchange optical pumping system  

作　　者：Ke Zhang Jun Li Min Jiang Nan Zhao XinHua Peng 

机构地区：[1]Beijing Computational Science Research Center,Bejing 100193,Chin [2]Hefei National Laboratory for Physical Sciences at Microscale,Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China [3]Synergetic Innovation Center of Quantum Information&Quantum Physics,University of Science and Technology of China,Hefei 230026,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2018年第8期27-32,共6页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Key Basic Research Program of China(Grant Nos.2014CB848700,and 2013CB921800)

摘　　要：Control of magnetization plays an important role in the scientific and technological field of manipulating spin systems. In this work, we study the problem of manipulating nuclear magnetization in the spin-exchange optical pumping system, including accelerating the recovery of nuclear polarization and fixing it on a specific desired state. A real-time feedback control strategy is exploited here. We have also done some numerical simulations, with the results clearly demonstrating the effectiveness of our method, that the nuclear magnetization is able to be driven towards the equilibrium state at a much faster speed and also can be stabilized to a target state. We expect that our feedback control method can find applications in gyro experiments.Control of magnetization plays an important role in the scientific and technological field of manipulating spin systems. In this work, we study the problem of manipulating nuclear magnetization in the spin-exchange optical pumping system, including accelerating the recovery of nuclear polarization and fixing it on a specific desired state. A real-time feedback control strategy is exploited here. We have also done some numerical simulations, with the results clearly demonstrating the effectiveness of our method, that the nuclear magnetization is able to be driven towards the equilibrium state at a much faster speed and also can be stabilized to a target state. We expect that our feedback control method can find applications in gyro experiments.

关 键 词：optical pumping feedback control nuclear magnetic resonance state stabilization 

分 类 号：O469[理学—凝聚态物理]