Determining the lifetime of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mn>5</mml:mn><mml:mi>s</mml:mi><mml:mn>5</mml:mn><mml:mi>p</mml:mi><mml:msup><mml:mrow/><mml:mn>3</mml:mn></mml:msup><mml:msubsup><mml:mi>P</mml:mi><mml:mn>0</mml:mn><mml:mrow><mml:mi mathvariant="normal">o</mml:mi></mml:mrow></mml:msubsup></mml:math> metastable state in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:msup><mml:mi/><mml:mn>87</mml:mn></mml:msup><mml:mi>Sr</mml:mi></mml:math> from the electric dipole matrix element
Xiaotong Lu, Feng Guo, Yanyan Liu, Jingjing Xia, Guodong Zhao, Ying-Xin Chen, Yebing Wang, Benquan Lu, Hong Chang
Abstract
We report a measurement of the radiative lifetime of the $5s5p\phantom{\rule{0.25em}{0ex}}{}^{3}{P}_{0}^{\mathrm{o}}$ metastable state in ${}^{87}\mathrm{Sr}$, which is coupled to the $5{s}^{2}\phantom{\rule{0.25em}{0ex}}\phantom{\rule{0.2em}{0ex}}{}^{1}{S}_{0}$ ground state via a hyperfine-induced electric dipole transition. The radiative lifetime is determined to be 151.4(48) s, in good agreement with theoretical results. Our approach relies on accurate measurements of laser intensity and free-space Rabi frequency, enabling lifetime measurements of any excited state and particularly suitable for long-lived states.
Topics & Concepts
MetastabilityRadiative transferExcited statePhysicsGround stateAtomic physicsState (computer science)Hyperfine structureIntensity (physics)AlgorithmComputer scienceOpticsQuantum mechanicsAdvanced Frequency and Time StandardsCold Atom Physics and Bose-Einstein CondensatesAtomic and Subatomic Physics Research