Fast thermometry for trapped atoms using recoil-induced resonance  

作　　者：赵延霆 苏殿强 姬中华 张洪山 肖连团 贾锁堂 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Laser Spectroscopy,Shanxi University

出　　处：《Chinese Physics B》2015年第9期198-201,共4页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Development Program of China(Grant No.2012CB921603);the National High Technology Research and Development Program of China(Grant No.2011AA010801);the National Natural Science Foundation of China(Grant Nos.61275209,11304189,61378015,and 11434007);Program for Changjiang Scholars and Innovative Research Team in Universities of China(Grant No.IRT13076)

摘　　要：We have employed recoil-induced resonance（RIR） with linewidth on the order of 10 k Hz to demonstrate the fast thermometry for ultracold atoms. We theoretically calculate the absorption spectrum of RIR which agrees well with the experimental results. The temperature of the ultracold sample derived from the RIR spectrum is T = 84 ± 4.5 μK, which is close to 85 μK that measured by the method of time-of-flight absorption imaging. To exhibit the fast measurement advantage in applying RIR to the ultracold atom thermometry, we study the dependence of ultracold sample temperature on the trapping beam frequency detuning. This method can be applied to determine the translational temperature of molecules in photoassociation dynamics.We have employed recoil-induced resonance（RIR） with linewidth on the order of 10 k Hz to demonstrate the fast thermometry for ultracold atoms. We theoretically calculate the absorption spectrum of RIR which agrees well with the experimental results. The temperature of the ultracold sample derived from the RIR spectrum is T = 84 ± 4.5 μK, which is close to 85 μK that measured by the method of time-of-flight absorption imaging. To exhibit the fast measurement advantage in applying RIR to the ultracold atom thermometry, we study the dependence of ultracold sample temperature on the trapping beam frequency detuning. This method can be applied to determine the translational temperature of molecules in photoassociation dynamics.

关 键 词：ultracold atoms temperature measurement recoil-induced resonance 

分 类 号：O562[理学—原子与分子物理]