Dr. Guilherme de Sousa is the master (equation) of the universe
Congratulations Guilherme!
Category: Group News
Many-body phases from effective geometrical frustration and long-range interactions in a subwavelength latticeKolmogorov Scaling in Turbulent 2D Bose-Einstein Condensates
Geometrical frustration and long-range couplings are key contributors to create quantum phases with different properties throughout physics. We propose a scheme where both ingredients naturally emerge in a Raman induced subwavelength lattice. We first demonstrate that Raman-coupled multicomponent quantum gases …
Kolmogorov Scaling in Turbulent 2D Bose-Einstein Condensates
We investigated turbulence in 2D atomic Bose-Einstein condensates (BECs) using a minimally destructive, impurity injection technique analogous to particle image velocimetry in conventional fluids. Our approach transfers small regions of the BEC into a different hyperfine state and tracks their …
Kolmogorov Scaling in Turbulent 2D Bose-Einstein Condensates Read more »
Measurement resolution enhanced coherence for lattice fermions
Weak measurement enables the extraction of targeted information from a quantum system while minimizing decoherence due to measurement backaction. However, in many-body quantum systems, backaction can have unexpected effects on wave-function collapse. We theoretically study a minimal many-particle model consisting …
Measurement resolution enhanced coherence for lattice fermions Read more »
Stationary solitary waves in F=1 spin-orbit-coupled Bose-Einstein condensates
We consider solitary wave excitations above the ground state of 𝐹=1 spin-orbit-coupled Bose-Einstein condensates (SOBECs). The low-energy properties of SOBECs in any of the three branches of the single-particle dispersion relation can be described by suitable scalar nonlinear Schrödinger (NLS) equations which we …
Stationary solitary waves in F=1 spin-orbit-coupled Bose-Einstein condensates Read more »
Dr. Junheng Tao defended his thesis with a non-Hermitian flair!
Congratulations Junheng! Even with large dissipation, March 12, 2024 will not be lost to time.
Whoo-hoo! Dr. Mingshu Zhao defended his thesis!
Way to go Mingshu! March 1, 2024 will live on in history.
Adam Savage visits RbK!
Adam Savage, of Mythbusters fame, gave the NIST colloquium today and visited the RbK lab! Pictured (left to right) are Alina, Ian, Edvinas, Emmanuel and Adam.
Observation of Anisotropic Superfluid Density in an Artificial Crystal
We experimentally and theoretically investigate the anisotropic speed of sound of an atomic superfluid (SF) Bose-Einstein condensate in a 1D optical lattice. Because the speed of sound derives from the SF density, this implies that the SF density is itself …
Observation of Anisotropic Superfluid Density in an Artificial Crystal Read more »
Weak-measurement-induced heating in Bose-Einstein condensates
Ultracold atoms are an ideal platform for understanding system-reservoir dynamics of many-body systems. Here, we study quantum back-action in atomic Bose-Einstein condensates, weakly interacting with a far-from resonant, i.e., dispersively interacting, probe laser beam. The light scattered by the atoms …
Weak-measurement-induced heating in Bose-Einstein condensates Read more »