Spin–orbit-coupled Bose–Einstein condensates
- Y.-J. Lin, K. Jiménez-García, I. Spielman
- PhysicsNature
- 3 March 2011
The engineered SO coupling in a neutral atomic Bose–Einstein condensate sets the stage for the realization of topological insulators in fermionic neutral atom systems and develops a many-body theory that provides quantitative agreement with the observed location of the transition.
Synthetic magnetic fields for ultracold neutral atoms
- Y.-J. Lin, R. Compton, K. Jiménez-García, J. V. Porto, I. Spielman
- PhysicsNature
- 3 December 2009
This work experimentally realizes an optically synthesized magnetic field for ultracold neutral atoms, which is evident from the appearance of vortices in the authors' Bose–Einstein condensate, and uses a spatially dependent optical coupling between internal states of the atoms, yielding a Berry’s phase sufficient to create large synthetic magnetic fields.
A synthetic electric force acting on neutral atoms
- Yu-ju Lin, R. Compton, K. Jiménez-García, W. Phillips, J. V. Porto, I. Spielman
- Physics
- 28 August 2010
In electromagnetism, the vector potential generates magnetic fields through its spatial variation and electric fields through its time dependence. Now, it is demonstrated that, by engineering a…
Raman-induced interactions in a single-component Fermi gas near an s-wave Feshbach resonance.
- R. A. Williams, M. Beeler, L. LeBlanc, K. Jiménez-García, I. Spielman
- PhysicsPhysical Review Letters
- 26 August 2013
This work experimentally demonstrates a route to strongly interacting single-component atomic Fermi gases by combining an s-wave Feshbach resonance (giving strong interactions) and spin-orbit coupling (creating an effective p-wave channel).
Synthetic Partial Waves in Ultracold Atomic Collisions
- R. A. Williams, L. LeBlanc, I. Spielman
- PhysicsScience
- 20 January 2012
A pair of Raman lasers are used to modify the interaction between two colliding Bose-Einstein condensates to include beyond–s-wave (d- and g-wave) contributions, expected to enable quantum simulation of exotic systems, including those predicted to support Majorana fermions.
Phases of a two-dimensional bose gas in an optical lattice.
- K. Jiménez-García, R. Compton, Y.-J. Lin, W. Phillips, J. V. Porto, I. Spielman
- PhysicsPhysical Review Letters
- 8 March 2010
The identification of the transition from superfluid to Mott insulator, as a function of both atom density and lattice depth, is in excellent agreement with a universal state diagram and a failure of the local density approximation in the transition region is suggested.
Peierls substitution in an engineered lattice potential.
- K. Jiménez-García, L. LeBlanc, R. A. Williams, M. Beeler, A. R. Perry, I. Spielman
- PhysicsPhysical Review Letters
- 31 January 2012
A one-dimensional lattice derived purely from effective Zeeman shifts resulting from a combination of Raman coupling and radio-frequency magnetic fields is described, with experimentally realizing the Peierls substitution for ultracold neutral atoms.
Direct observation of zitterbewegung in a Bose–Einstein condensate
- L. LeBlanc, M. Beeler, I. Spielman
- Physics
- 5 March 2013
Zitterbewegung, a force-free trembling motion first predicted for relativistic fermions like electrons, was an unexpected consequence of the Dirac equation's unification of quantum mechanics and…
Tunable spin-orbit coupling via strong driving in ultracold-atom systems.
- K. Jiménez-García, L. LeBlanc, I. Spielman
- PhysicsPhysical Review Letters
- 12 December 2014
A technique for controlling spin-orbit coupling in a two-component Bose-Einstein condensate using amplitude-modulated Raman coupling is experimentally demonstrated and theoretically analyzed.
The spin Hall effect in a quantum gas
- M. Beeler, R. A. Williams, K. Jiménez-García, L. LeBlanc, A. R. Perry, I. Spielman
- PhysicsNature
- 21 March 2013
This work observes the spin Hall effect in a quantum-degenerate Bose gas, and uses the resulting spin-dependent Lorentz forces to realize a cold-atom spin transistor that behaves as a type of velocity-insensitive adiabatic spin selector, with potential application in devices such as magnetic or inertial sensors.
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