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  "title": "Floquet Interpretation of Avoided Crossings in AC Stark-Shifted Rydberg-EIT Spectra",
  "contactPoint": {
    "fn": "Nik Prajapati",
    "hasEmail": "mailto:nikunjkumar.prajapati@nist.gov"
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    "We present a combined experimental and Floquet-theoretical study of avoided crossings in the\nAC Stark-shifted electromagnetically induced transparency (EIT) spectra of Rydberg atoms. Using\nthe Shirley method, we analyze the Floquet eigenstates to establish a direct connection between\nthe measured spectra and the underlying dressed-state dynamics. These avoided-crossing structures\ncannot be fully explained by conventional AC Stark maps alone, which provide the energy shifts but\ndo not reveal the underlying state composition and coupling pathways. By tracking the evolution\nof state mixing, bare-state composition, and dominant higher-order Floquet coupling pathways, we\nreveal the physical mechanisms responsible for the formation of avoided crossings across different\nprincipal quantum numbers and RF frequencies. Our results demonstrate that Floquet-eigenstate\nanalysis provides a powerful framework for interpreting complex AC Stark-shifted Rydberg-EIT\nspectra and the underlying higher-order Floquet coupling interactions."
  ],
  "keyword": [
    "Avoided Crossings",
    "AC Stark Shifts",
    "Rydberg",
    "RF Fields"
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      "familyName": "Talashila",
      "fn": "Rajavardahn  Talashila",
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