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  "title": "Data associated with \"Electromagnetically induced transparency and population repump readout of Rydberg states of Cs atoms in a J-scheme\"",
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    "fn": "Noah Schlossberger",
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    "Data associated with the publication \"Electromagnetically induced transparency and population repump readout of\nRydberg states of Cs atoms in a J-scheme\".",
    "Rydberg atom electrometry offers traceable electric field measurements over many decades of radio frequencies\nin a single device. Miniaturization of these sensors is primarily limited by requirements of the lasers used. Here\nwe demonstrate a three-photon sensing scheme using a J-shaped energy level coupling that can be achieved\nusing external cavity diode lasers, without the need for a doubling crystal or tapered amplifier. In the low\nlaser power regime, we demonstrate a full-width at half-maximum linewidth of 1.3 MHz. We demonstrate that\nfor RF field electrometry using conventional heterodyne techniques, we can detect 4.7 GHz at a sensitivity of\n27 \u03bcV m\u22121 Hz\u22121/2, comparable to that of two-photon detection schemes which require the use of a tapered\namplifier. We also investigate a modified scheme where the probe laser is locked to a different hyperfine state,\nthus measuring the two-photon EIT in the other two lasers via the change in population of this separate state\ndue to repumping. In this scheme we find the sensitivity for a 4.7 GHz field to be 39 \u03bcV m\u22121 Hz\u22121/2, and\ndemonstrate that the amplitude scaling with probe power offers a different saturation profile than the linked\nJ-scheme counterpart."
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