Autler-Townes splitting via frequency up-conversion at ultralow-power levels in cold<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">Rb</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>87</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>atoms using an optical nanofiber
Physical review. A, Atomic, molecular, and optical physics/Physical review, A, Atomic, molecular, and optical physics