Three-dimensional atom localization via spontaneous emission in a four-level atom
Fei Song , Jin-Yu Chen , Zhi-Ping Wang , Ben-Li Yu
Front. Phys. ›› 2018, Vol. 13 ›› Issue (5) : 134208
Three-dimensional atom localization via spontaneous emission in a four-level atom
We investigate high-precision three-dimensional (3D) atom localization in a coherently-driven, fourlevel atomic system via spontaneous emission. Space-dependent atom-field interactions allow atomic position information to be obtained by measuring spontaneous emission. By properly varying system parameters, atoms within a certain range can be localized with nearly a probability of 100% and a maximal resolution of ~0.04λ. This scheme may be useful for the high-precision measurement of the center-of-mass wave functions of moving atoms and in atom nanolithography.
atom localization / spontaneous emission / dressed-state picture
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