Publications

Membrane MOT: Trapping Dense Cold Atoms in a Sub-Millimeter Diameter Hole of a Microfabricated Membrane Device

Lee, Jongmin L.; Biedermann, Grant B.; Mudrick, John M.; Douglas, Erica A.; Jau, Yuan-Yu J.

We present an implementation that can keep a coldatom ensemble within a sub-millimeter diameter hole in a transparent membrane. Based on the effective beam diameter of the magneto-optical trap (MOT), d = 400 mm-hole diameter, we measure the atom number that is 105 times higher than the predicted value using the conventional d6 scaling rule. Atoms trapped by the membrane MOT are cooled down to 10 mK with sub- Doppler cooling process and can be potentially coupled to the photonic/electronic integrated circuits that can be fabricated in the membrane device by taking a step toward the atom trap integrated platform.