JQI

Abstract: This talk will consist of two parts. First, we will discuss passively protected quantum memories, in which an encoded qubit is coupled to an environment that naturally corrects errors. For example, we will present a candidate for a passively protected quantum memory in two dimensions. Second, we will discuss how entanglement in a network of quantum sensors can be used to accurately measure properties of spatially varying fields.

Abstract: Polyatomic molecules uniquely enable the simultaneous combination of multiple features advantageous for precision measurement. Searches for charge-parity (CP) violation benefit from large internal molecular fields, high polarizability, internal co-magnetometry, and the ability to cycle photons - all of which can be found in certain polyatomic species. We discuss experimental and theoretical developments in several linear metal hydroxide (MOH) species.

Abstract: Multi-mode continuous-variable entanglement has become increasingly important for practical quantum information processing. We generate 2-mode vacuum-squeezed optical states through a 4-wave mixing (4WM) process in Rb atomic vapor and conduct a detailed study using homodyne measurements. By dividing the squeezing bandwidth into smaller frequency bins, we show that different sideband frequencies represent independent sources of two-mode squeezing.

Abstract: Kerr optical frequency combs are generated by pumping an integrated microresonator with a resonant laser.

Abstract: Do p-wave systems have universal properties? Ultracold atoms are normally dominated by s-wave interactions, because scattering channels with orbital angular momenta must tunnel through a centrifugal barrier. However, femionic exchange symmetry and Feshbach resonances have been shown to enhance p-wave scattering. In this talk, I will discuss recent work that also uses strong confinement to control orbital interactions in spin-polarized Potassium 40. Spectroscopy of isolated atom pairs reveals multi-branched unitary interactions, enabling a test of the p-wave pseudopotential.

Abstract: A pedagogical review will be given on quantum scaling anomalies and its consequences in 2D and 1D systems. The emphasis will be in the concepts and the basic logic of the main applications of these ideas to the study of ultracold, diluted Fermi systems. The impact of these developments in other areas will be presented.

Abstract: Quantum systems with a flexible architecture of connections and interactions mimic natural systems and provide an interesting arena to study thermodynamic evolution. In this talk I will introduce the minimum size of a machine of thermally initialized qubits that can generate an increase in extractable work for a subsystem and then embed the machine dynamics into a larger landscape of qubits.

Abstract: Degenerate gases in modulated optical lattices are a flexible testbed for the experimental study of quantum matter driven far from equilibrium. I will present results from a sequence of recent experiments in this area, on topics ranging from interacting quantum kicked rotors to localization in driven quasicrystals. Time permitting, I will also discuss a new tweezer-based degenerate gas platform under construction at UC Santa Barbara which aims at the study of quantum interactive dynamics.