EQuAL Seminar: Jeremy Tanlimco

"Force Sensing with Floquet-Bloch Atom Interferometry"

Atom interferometry with ultracold gases exploits the wave nature of matter to measure gravity and other forces to great precision. We present a novel platform for compact, continuously trapped atom interferometry with a Bose-Einstein condensate of lithium in the Floquet-Bloch bands of an amplitude-modulated optical lattice. Our measurement of the resulting constructive and destructive interference closely agrees with the analytic and numerical predictions. In analogy to the magic wavelengths employed by optical lattice clocks, we numerically identify and experimentally realize "magic lattice parameters" for which the interferometric phase is minimally sensitive to noise in the lattice intensity.