Category: RbLi

Fourier transform spectroscopy of a spin–orbit coupled Bose gas

We describe a Fourier transform spectroscopy technique for directly measuring band structures, and apply it to a spin-1 spin–orbit coupled Bose–Einstein condensate. In our technique, we suddenly change the Hamiltonian of the system by adding a spin–orbit coupling interaction and

Posted in Group News, Papers Published, RbLi

Vortex nucleation in a Bose–Einstein condensate: from the inside out

We observed a new mechanism for vortex nucleation in Bose–Einstein condensates (BECs) subject to synthetic magnetic fields. We made use of a strong synthetic magnetic field initially localized between a pair of merging BECs to rapidly create vortices in the

Posted in Atomtronics, Group News, Papers Published, RbLi

Celebration of: Magnetic phases of spin-1 spin–orbit-coupled Bose gases

The UMD team got together to celebrate our recent paper “Magnetic phases of spin-1 spin–orbit-coupled Bose gases;” for some reason we went to Town Hall a long-time College Park dive bar. Times were good! Ana, Erin and Dimi were in

Posted in Group News, RbLi

Rashba realization: Raman with RF

We theoretically explore a Rashba spin–orbit coupling scheme which operates entirely in the absolute ground state manifold of an alkali atom, thereby minimizing all inelastic processes. An energy gap between ground eigenstates of the proposed coupling can be continuously opened

Posted in Atomtronics, Group News, Papers Published, RbLi

Magnetic phases of spin-1 spin–orbit-coupled Bose gases

Phases of matter are characterized by order parameters describing the type and degree of order in a system. Here we experimentally explore the magnetic phases present in a near-zero temperature spin-1 spin–orbit-coupled atomic Bose gas and the quantum phase transitions

Posted in Atomtronics, Group News, Papers Published, RbLi, Uncategorized

Ryan Price flies the coop!

Ryan defended his thesis today. Rock out!

Posted in Group News, RbLi

Dan Campbell graduates

Dan defended this thesis titled “Engineered potentials in ultracold Bose-Einstein condensates” today. Way to go!

Posted in Group News, Personnel, RbLi

Quenched binary Bose-Einstein condensates: Spin-domain formation and coarsening

We explore the time evolution of two-component Bose-Einstein condensates (BECs), quasi one dimensional with respect to their spinor dynamics, following a quench from one component BECs with a U(1) order parameter into two-component condensates with a U(1)xZ2 order parameter. In

Posted in Group News, Papers Published, RbLi

Optimally focused cold atom systems obtained using density-density correlations

Resonant absorption imaging is a common technique for detecting the two-dimensional column density of ultracold atom systems. In many cases, the system’s thickness along the imaging direction greatly exceeds the imaging system’s depth of field, making the identification of the

Posted in Group News, Papers Published, RbLi

Subhadeep De starts at NPL, New Delhi

We all wish Deep the best in his new Staff Scientist position at the National Physical Laboratory (NPL), New Delhi, India.  During his tenure, Deep setup the now operating RbLi experiment on the University of Maryland campus, and lead our

Posted in Group News, Personnel, RbLi