Additive manufacturing of magnetic shielding and ultra-high vacuum flange for cold atom sensors

I.c.e.: an Ultra-cold Atom Source for Long-baseline Interferometric Inertial Sensors in Reduced Gravity

The accuracy and precision of current atom-interferometric inertial sensors rival state-of-theart conventional devices using artifact-based test masses1. Atomic sensors are well suited for fundamental measurements of gravito-inertial fields. The sensitivity required to test gravitational theories can be achieved by extending the baseline of the interferometer2. The I.C.E. (Interférométrie Cohér...

Ultra-Precision Metal Additive Manufacturing for Thermal Management of Microelectronics

Thermal management of microelectronic devices is an ongoing technological challenge that directly affects device-level and system-level performance and reliability [1]. The fundamental process of electron transport in a transistor device results in dissipation of heat. This causes temperature rise, which in turn limits device performance. For most semiconductor devices, performance goes down wi...

Fast machine-learning online optimization of ultra-cold-atom experiments

We apply an online optimization process based on machine learning to the production of Bose-Einstein condensates (BEC). BEC is typically created with an exponential evaporation ramp that is optimal for ergodic dynamics with two-body s-wave interactions and no other loss rates, but likely sub-optimal for real experiments. Through repeated machine-controlled scientific experimentation and observa...

Effects of Atom-Laser Interaction on Ultra-Cold Atoms

Straight macroscopic magnetic guide for cold atom interferometer