Ryan Price flies the coop!
Ryan defended his thesis today. Rock out!
Category: Group News
Dynamical Detection of Topological Phase Transitions in Short-Lived Atomic Systems
We demonstrate that dynamical probes provide direct means of detecting the topological phase transition (TPT) between conventional and topological phases, which would otherwise be difficult to access because of loss or heating processes. We propose to avoid such heating by …
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Published in Science: Visualizing edge states with an atomic Bose gas in the quantum Hall regime
Bringing ultracold atomic gases into the quantum Hall regime is challenging. We engineered an effective magnetic field in a two-dimensional lattice with an elongated-strip geometry, consisting of the sites of an optical lattice in the long direction and of three …
Published and Featured in PRA Kaleidoscope: Three-level Haldane-like model on a dice optical lattice
We consider ultracold atoms in a two-dimensional optical lattice of the dice geometry in a tight-binding regime. The atoms experience a laser-assisted tunneling between the nearest neighbor sites of the dice lattice accompanied by the momentum recoil. This allows one …
Abigail Perry defends her thesis!
Abby defended her thesis titled “An apparatus for light-less artificial gauge fields and new imaging techniques” today. Way to go!
Gauge matters: observing the vortex-nucleation transition in a Bose condensate
The order parameter of a quantum-coherent many-body system can include a phase degree of freedom, which, in the presence of an electromagnetic field, depends on the choice of gauge. Because of the relationship between the phase gradient and the velocity, …
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Dan Campbell graduates
Dan defended this thesis titled “Engineered potentials in ultracold Bose-Einstein condensates” today. Way to go!
Tunable Spin-Orbit Coupling via Strong Driving in Ultracold-Atom Systems
Spin-orbit coupling is an essential ingredient in topological materials, conventional and quantum-gas-based alike. Engineered spin-orbit coupling in ultracold-atom systems—unique in their experimental control and measurement opportunities—provides a major opportunity to investigate and understand topological phenomena. Here we experimentally demonstrate and …
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Position-dependent spin–orbit coupling for ultracold atoms
We theoretically explore atomic Bose–Einstein condensates (BECs) subject to position-dependent spin–orbit coupling (SOC). This SOC can be produced by cyclically laser coupling four internal atomic ground (or metastable) states in an environment where the detuning from resonance depends on position. …
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Light-induced gauge fields for ultracold atoms
Gauge fields are central in our modern understanding of physics at all scales. At the highest energy scales known, the microscopic universe is governed by particles interacting with each other through the exchange of gauge bosons. At the largest length …