Quantum-droplet interferometry
arXiv:2511.09277 · doi:10.1088/1367-2630/ae1f33
Abstract
We propose atom interferometers based on quantum droplet (QD), which is also being reported as a superior platform for interferometry. The emphasis has been given to harmonic-oscillator (HO) or ring-shaped potentials. In the HO trap, a Gaussian barrier induces coherent splitting; in the ring, one or two barriers guide the splitting and subsequent recombination. The atom number and relative mean-field interaction strength critically affect the interferometric performance. The transmission-coefficient analysis identifies values of the barrier parameters for the balanced splitting. The post-recombination atom-number imbalance serves as a sensitive indicator of the relative phase between merging daughter QDs. We demonstrate that the HO-based setup may serve as a tilt-meter and target detector, and the ring geometry may be used as a compact QD Sagnac interferometer for rotation sensing.
24 pages, 15 figures. To be published in New Journal of Physics
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