Anderson localization is a single-particle localization phenomena in disordered media that is accompanied by an absence of diffusion. Spin-orbit coupling (SOC) describes an interaction between a particle’s spin and its momentum that directly affects its energy dispersion, for example, creating …
Enhanced transport of spin-orbit-coupled Bose gases in disordered potentials Read more »
“Realistic Rashba and Dresselhaus spin-orbit coupling for neutral atoms” with coauthors D. L. Campbell, G. Juzeliūnas was named one of the top 17 PRA’s over the past 50 years! Also see the JQI write up! https://jqi.umd.edu/news/pra-highlights-work-jqi-fellow-during-50th-anniversary-celebration
Established techniques for deterministically creating dark solitons in repulsively interacting atomic Bose-Einstein condensates (BECs) can only access a narrow range of soliton velocities. Because velocity affects the stability of individual solitons and the properties of soliton-soliton interactions, this technical limitation …
Creating solitons with controllable and near-zero velocity in Bose-Einstein condensates Read more »
On this day, April 6, 2020, Francisco Salces-Carcoba has (remotely) become Dr. ! Congratulations Paco!
We propose and describe our realization of a deeply subwavelength optical lattice for ultracold neutral atoms using N resonantly Raman-coupled internal degrees of freedom. Although counterpropagating lasers with wavelength λ provided two-photon Raman coupling, the resultant lattice period was λ/2N, an N-fold reduction as compared to …
Realization of a deeply subwavelength adiabatic optical lattice Read more »
Spin-orbit-coupled Bose-Einstein condensates (SOBECs) exhibit two new phases of matter, now known as the stripe and plane-wave phases. When two interacting spin components of a SOBEC spatially overlap, density modulations with periodicity given by the spin-orbit coupling strength appear. In …
Spatial Coherence of Spin-Orbit-Coupled Bose Gases Read more »
On this day, Dec. 2, 2019, Ana Valdés-Curiel has become Dr. ! Congratulations Ana.
Ian was one of five faculty members in the University of Maryland’s College of Computer, Mathematical, and Natural Sciences are included on Clarivate Analytics’ 2019 list of Highly Cited Researchers, a compilation of influential names in science. https://cmns.umd.edu/news-events/features/4508
We demonstrate partial-transfer absorption imaging as a technique for repeatedly imaging an ultracold atomic ensemble with minimal perturbation. We prepare an atomic cloud in a state that is dark to the imaging light. We then use a microwave pulse to …
Repeated measurements with minimally destructive partial-transfer absorption imaging Read more »
The creation of particle–antiparticle pairs from vacuum by a large electric field is at the core of quantum electrodynamics. Despite the wide acceptance that this phenomenon occurs naturally when electric field strengths exceed Ec ≈ 1018 V m−1, it has yet to be experimentally …