Ryan Balili

TL;DR: Polaritons are created in a harmonic potential trap analogous to atoms in optical traps and observe a number of signatures of Bose-Einstein condensation: spectral and spatial narrowing, a peak at zero momentum in the momentum distribution, first-order coherence, and spontaneous linear polarization of the light emission.

TL;DR: Lateral diffusion measurements of excitons at low temperature in double quantum wells of various widths are reported, establishing that the transport occurs by exciton motion.

TL;DR: The nonlinear spin dynamics offers an alternative route to switching, allowing us to realize an electrical spin-switch exhibiting ultralow switching energies below 0.5 fJ, laying the foundation for development of devices based on the electro-optical control of coherent spin ensembles on a chip.

TL;DR: In this article, the authors extended the lifetime of exciton polaritons from 10 to 100 picoseconds and observed a number of dramatic new effects, including a new and dynamic coherent state of spatially localized polariton at high densities.

TL;DR: The ability to precisely control the structure of the petal condensates both by carefully modifying the excitation geometry as well as perturbing the system on ultrafast timescales to reveal unexpected superfluid dynamics is demonstrated.