984 citations · 2.3k across the 19 of their papers we have counts for
19 papers
Measuring Non-local Brane Order with Error-corrected Parity Snapshots
Junhyeok Hur, Wonjun Lee, Kiryang Kwon +3
Exotic quantum many-body states, such as Haldane and spin liquid phases, can exhibit remarkable features like fractional excitations and non-abelian statistics and offer new unders…
Universality class of a spinor Bose-Einstein condensate far from equilibrium
SeungJung Huh, Koushik Mukherjee, Kiryang Kwon +4
Scale invariance and self-similarity in physics provide a unified framework to classify phases of matter and dynamical properties near equilibrium in both classical and quantum sys…
Site-Resolved Imaging of Bosonic Mott Insulator of Li atoms
Kiryang Kwon, Kyungtae Kim, Junhyeok Hur +2
We demonstrate a single-site and single-atom-resolved fluorescence imaging of a bosonic Mott insulator of Li atoms in an optical lattice. The fluorescence images are obtained b…
Emission of Spin-correlated Matter-wave Jets from Spinor Bose-Einstein Condensates
Kyungtae Kim, Junhyeok Hur, SeungJung Huh +2
We report the observation of matter-wave jet emission in a strongly ferromagnetic spinor Bose-Einstein condensate of Li atoms. Directional atomic beams with $|{F=1,m_F=1}\rangl…
Observation of a strongly ferromagnetic spinor Bose-Einstein condensate
SeungJung Huh, Kyungtae Kim, Kiryang Kwon +1
We report the observation of strongly ferromagnetic spinor Bose-Einstein condensates of Li atoms. The condensates are generated in an optical dipole trap without using ma…
Rapid production of large Li Bose-Einstein condensates using gray molasses
Kyungtae Kim, SeungJung Huh, Kiryang Kwon +1
We demonstrate the production of large Li Bose-Einstein condensates in an optical dipole trap using gray molasses. The sub-Doppler cooling technique reduces the temperatu…
Many-body delocalization in the presence of a quantum bath
Antonio Rubio-Abadal, Jae-yoon Choi, Johannes Zeiher +4
Closed generic quantum many-body systems may fail to thermalize under certain conditions even after long times, a phenomenon called many-body localization (MBL). Numerous studies s…
Coherent many-body spin dynamics in a long-range interacting Ising chain
Johannes Zeiher, Jae-yoon Choi, Antonio Rubio-Abadal +4
Coherent many-body quantum dynamics lies at the heart of quantum simulation and quantum computation. Both require coherent evolution in the exponentially large Hilbert space of an…
Exploring the many-body localization transition in two dimensions
Jae-yoon Choi, Sebastian Hild, Johannes Zeiher +7
One fundamental assumption in statistical physics is that generic closed quantum many-body systems thermalize under their own dynamics. Recently, the emergence of many-body localiz…
Many-body interferometry of a Rydberg-dressed spin lattice
Johannes Zeiher, Rick van Bijnen, Peter Schauß +5
Ultracold atoms are an ideal platform to study strongly correlated phases of matter in and out of equilibrium. Much of the experimental progress in this field crucially relies on t…
Rotating a Bose-Einstein condensate by shaking an anharmonic axisymmetric magnetic potential
Seji Kang, J. Choi, S. W. Seo +2
We present an experimental method for rotating a Bose-Einstein condensate trapped in an axisymmetric magnetic potential. This method is based on the anharmonicity of the trapping p…
Relaxation of superfluid turbulence in highly oblate Bose-Einstein condensates
Woo Jin Kwon, Geol Moon, Jae-yoon Choi +2
We investigate thermal relaxation of superfluid turbulence in a highly oblate Bose-Einstein condensate. We generate turbulent flow in the condensate by sweeping the center region o…
Scaling behavior of density fluctuations in an expanding quasi-2D degenerate Bose gas
Sang Won Seo, Jae-yoon Choi, Yong-il Shin
We measure the power spectrum of density fluctuations emerged in a freely expanding quasi-two-dimensional (2D) degenerate Bose gas and investigate the scaling behavior of the spect…
Observation of a Geometric Hall Effect in a Spinor Bose-Einstein Condensate with a Skyrmion Spin Texture
Jae-yoon Choi, Seji Kang, Sang Won Seo +2
For a spin-carrying particle moving in a spatially varying magnetic field, effective electromagnetic forces can arise due to the geometric phase associated with adiabatic spin rota…
Free expansion of quasi-2D Bose-Einstein condensates with quantized vortices
Sang Won Seo, Jae-yoon Choi, Yong-il Shin
We observe that a density-depleted vortex core evolves into concentric density ripples in a freely expanding quasi-two-dimensional Bose-Einstein condensate. The atomic density of t…
Observation of Thermally Activated Vortex Pairs in a Quasi-2D Bose Gas
Jae-yoon Choi, Sang Won Seo, Yong-il Shin
We measure the in-plane distribution of thermally activated vortices in a trapped quasi-2D Bose gas, where we enhance the visibility of density-depleted vortex cores by radially co…
Probing Phase Fluctuations in a 2D Degenerate Bose Gas by Free Expansion
Jae-yoon Choi, Sang Won Seo, Woo Jin Kwon +1
We measure the power spectrum of the density distribution of a freely expanding 2D degenerate Bose gas, where irregular density modulations gradually develop due to the initial pha…
Observation of Topologically Stable 2D Skyrmions in an Antiferromagnetic Spinor Bose-Einstein Condensate
Jae-yoon Choi, Woo Jin Kwon, Yong-il Shin
We present the creation and time evolution of two-dimensional Skyrmion excitations in an antiferromagnetic spinor Bose-Einstein condensate. Using a spin rotation method, the Skyrmi…
Fast production of large 23Na Bose-Einstein condensates in an optically plugged magnetic quadrupole trap
Myoung-Sun Heo, Jae-yoon Choi, Yong-il Shin
We demonstrate a fast production of large 23Na Bose-Einstein condensates in an optically plugged, magnetic quadrupole trap. A single global minimum of the trapping potential is gen…