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Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
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    We developed a new single-shot method to measure Bose-Einstein Condensate trap frequencies. This technique achieves high accuracy, improving existing methods by three times for precise quantum system analysis.

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    Area of Science:

    • Atomic, Molecular, and Optical Physics
    • Quantum Gases
    • Condensed Matter Physics

    Background:

    • Bose-Einstein Condensates (BECs) are quantum states of matter crucial for studying quantum phenomena.
    • Accurate measurement of trap frequencies is essential for controlling and characterizing BECs.
    • Existing methods for trap frequency measurement can be time-consuming or lack precision.

    Purpose of the Study:

    • To introduce a novel, high-accuracy single-shot method for measuring the trap frequency of confined Bose-Einstein Condensates.
    • To demonstrate an improvement in measurement accuracy by a factor of three compared to previous techniques.
    • To extend the applicability of the method to higher trap frequencies using reconstructive aliasing.

    Main Methods:

    • Utilizing an atom laser to repeatedly sample the mean velocity of trap oscillations over time.
    • Implementing a single-shot measurement protocol for efficiency.
    • Applying a reconstructive aliasing approach to overcome sampling frequency limitations.

    Main Results:

    • Achieved an unprecedented accuracy of 39 ppm (16 mHz) in trap frequency measurement within a single experimental run.
    • Demonstrated a threefold improvement in accuracy over existing literature methods.
    • Successfully applied the method to measure trap frequencies exceeding the sampling frequency by more than a factor of three.

    Conclusions:

    • The developed single-shot method offers a significant advancement in the precise characterization of Bose-Einstein Condensates.
    • This technique provides a faster and more accurate way to determine trap frequencies, crucial for quantum simulations and atom optics.
    • The reconstructive aliasing approach broadens the utility of this measurement technique for a wider range of experimental parameters.