Dr. Francisco Salces-Carcoba defends his thesis!
On this day, April 6, 2020, Francisco Salces-Carcoba has (remotely) become Dr. ! Congratulations Paco!
Category: Group News
Realization of a deeply subwavelength adiabatic optical lattice
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 …
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Spatial Coherence of Spin-Orbit-Coupled Bose Gases
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 …
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Dr. Ana Valdés-Curiel defends her thesis!
On this day, Dec. 2, 2019, Ana Valdés-Curiel has become Dr. ! Congratulations Ana.
Ian named 2019 Clarivate “Highly Cited Researcher”
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
Repeated measurements with minimally destructive partial-transfer absorption imaging
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 …
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Sauter–Schwinger effect with a quantum gas
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 …
Measurement-induced dynamics and stabilization of spinor-condensate domain walls
Weakly measuring many-body systems and allowing for feedback in real time can simultaneously create and measure new phenomena in quantum systems. We theoretically study the dynamics of a continuously measured two-component Bose-Einstein condensate (BEC) potentially containing a domain wall and …
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Emergent gauge field and the Lifshitz transition of spin-orbit coupled bosons in one dimension
In the presence of strong spin-independent interactions and spin-orbit coupling, we show that the spinor Bose liquid confined to one spatial dimension undergoes an interaction- or density-tuned quantum phase transition similar to one theoretically proposed for itinerant magnetic solid-state systems. …
Imaging topology of Hofstadter ribbons
Physical systems with non-trivial topological order find direct applications in metrology (Klitzing et al 1980 Phys. Rev. Lett. 45 494–7) and promise future applications in quantum computing (Freedman 2001 Found. Comput. Math. 1 183–204; Kitaev 2003 Ann. Phys. 303 2–30). …