JILA X317

Continuous-variable quantum systems enable encoding complex states in fewer modes through large-scale non-Gaussian states. Motion, as a continuous degree of freedom, underlies phenomena from Cooper pair dynamics to levitated macroscopic objects. Hence, realizing high-energy, spatially extended motional states remains key for advancing quantum sensing, simulation, and foundational tests.
In the talk, I will present the following control tasks for various nonlinear mechanical systems, including trapped atoms, levitated particles, and clamped oscillators with spin-motion coupling.

Rydberg atoms in optical tweezers have become a leading platform for both quantum simulation and quantum computing. However, they are often limited by their relatively short lifetime of a few tens of microseconds. One way to overcome this limitation is to use Rydberg atoms with maximum angular momentum (m = l = n-1), known as circular states. When placed in a cryogenic environment, these states can exhibit lifetimes of several milliseconds. Circular states of alkaline-earth-like atoms offer additional advantages.

Nuclear spins are usually not thought to participate in chemical reactions. However, in the ultracold temperature regime, we have a new opportunity to examine this general statement with quantum mechanical details. In this talk, I will present our ongoing investigations into the roles of nuclear spins, quantum coherence, and entanglement in molecule-molecule reactions and atom-molecule collisions, utilizing a one-of-a-kind ultracold KRb molecule apparatus inspired from the original set of JILA KRb experiments 17 years ago.

The promise of universal quantum computing hinges on scalable single- and inter-qubit control interactions. Photon systems offer strong isolation from environmental disturbances and provide speed and timing advantages while facing challenges in achieving deterministic photon-photon interactions necessary for scalable universal quantum computing.

Abstract: In recent years, neutral atom tweezer arrays have emerged as a promising platform for quantum computing. Among various atomic species, alkaline-earth(-like) atoms—particularly ytterbium—offer unique advantages arising from their rich internal structure. In this talk, I will present progress from my PhD work, demonstrating how these features can be harnessed to build a useful quantum computer in the future.

Over the last 20 years, we have discovered that we live in a molecular Universe: A Universe with a rich and varied organic inventory; A Universe where molecules are abundant and widespread; A Universe where molecules play a central role in key processes that dominate the structure and evolution of galaxies. A Universe where molecules provide convenient thermometers and barometers to probe local physical conditions.

The behavior of the doped Hubbard model at low temperatures is a central problem in modern condensed matter physics, with relevance to correlated materials such as cuprate superconductors. Despite extensive computational studies, many open questions remain on its low-temperature phase diagram, motivating its study through quantum simulation with ultracold fermionic atoms in optical lattices. Here, leveraging a recent several-fold reduction in experimental temperatures, we report the first direct experimental observation of the pseudogap metal in the Hubbard model.

In this workshop, you will learn how to tailor your research for different audiences. It will provide you with skills to present your work for job interviews in academia and industry. You will also learn how to apply these communication skills to the public and have the opportunity to practice with feedback from trained experts in science communication. All JILAns are welcome to attend.

The workshop is two hours total and will be offered twice: 
Option 1: Wednesday November 12, 10am-12pm in JILA X325
Option 2: Thursday November 13, 2-4pm in JILA X317