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Position measurement of a dipolar scatterer via self-homodyne detection
preprintposted on 2023-01-11, 22:16 authored by G. Cerchiari, L. Dania, D. S. Bykov, R. Blatt, T. Northup
We describe a technique to measure the position of a dipolar scatterer based on self-homodyne detection of the scattered light. The method can theoretically reach the Heisenberg limit, at which information gained about the position is constrained only by the back-action of the scattered light. The technique has applications in the fields of levitated optomechanics and trapped ions and is generally applicable to the position determination of confined light scatterers.