81 citations · 106 across the 9 of their papers we have counts for
7 papers · 1 filter
Dual-species atomic absorption image reconstruction using deep neural networks
Kyuhwan Lee, Yong-il Shin
Optical imaging plays an instrumental role in understanding the behavior of trapped neutral atoms. In this work, we describe a deep learning-based online image completion protocol…
Enhancement of damping in a turbulent atomic Bose-Einstein condensate
Junghoon Lee, Jongmin Kim, Jongheum Jung +1
Turbulence enhances momentum transport in classical fluids, effectively increasing their viscosity. We investigate an analogous effect in a superfluid by measuring the damping of c…
Flattening a trapped atomic gas using a programmable optical potential in a feedback loop
Sol Kim, Kyuhwan Lee, Jongmin Kim +1
We present a method for producing a flat, large-area Fermi gas of Li with a uniform area density. The method uses a programmable optical potential within a feedback loop to fla…
Chaos-assisted Turbulence in Spinor Bose-Einstein Condensates
Jongmin Kim, Jongheum Jung, Junghoon Lee +2
We present a turbulence-sustaining mechanism in a spinor Bose-Einstein condensate, which is based on the chaotic nature of internal spin dynamics. Magnetic driving induces a comple…
Observation of universal Kibble-Zurek scaling in an atomic Fermi superfluid
Kyuhwan Lee, Sol Kim, Taehoon Kim +1
Half a century ago, T. Kibble proposed a scenario for topological defect formation from symmetry breaking during the expansion of the early Universe. W. Zurek later crystallized th…
Critical Energy Dissipation in a Binary Superfluid Gas by a Moving Magnetic Obstacle
Joon Hyun Kim, Deokhwa Hong, Kyuhwan Lee +1
We study the critical energy dissipation in an atomic superfluid gas with two symmetric spin components by an oscillating magnetic obstacle. Above a certain critical oscillation fr…
Kibble-Zurek universality in a strongly interacting Fermi superfluid
Bumsuk Ko, Jee Woo Park, Y. Shin
Near a continuous phase transition, systems with different microscopic origins display universal dynamics if their underlying symmetries are compatible. In a thermally quenched sys…