Tunable axial potentials for atom-chip waveguides
James Stickney, Eric Imhof, Brian L. Kasch +4 more
We present a method for generating precise, dynamically tunable magnetic potentials that can be described by a polynomial series along the axis of a cold-atom waveguide near the surface of an atom chip. With a single chip design consisting of several wire pairs, various axial potentials can be created by changing the ratio of the currents in the wires, including double wells, triple wells, and pure harmonic traps with suppression of higher-order terms. We use this method to design and fabricate a chip with modest experimental requirements. Finally, we use the chip to demonstrate a double-well potential.
arXiv:1407.6398•Physical Review A•Nov 3, 2017•4 citations