Alec Cao
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View article: Continuously trapped matter-wave interferometry in magic Floquet-Bloch band structures
Continuously trapped matter-wave interferometry in magic Floquet-Bloch band structures Open
Trapped matter-wave interferometry offers the promise of compact high-precision local force sensing. However, noise in the trap itself can introduce new systematic errors which are absent in traditional free-fall interferometers. We descri…
View article: Universal Quantum Dynamics of Bose Polarons
Universal Quantum Dynamics of Bose Polarons Open
Predicting the emergent properties of impurities immersed in a quantum bath is a fundamental challenge that can defy quasiparticle treatments. Here, we measure the spectral properties and real-time dynamics of mobile impurities injected in…
View article: Universal Quantum Dynamics of Bose Polarons
Universal Quantum Dynamics of Bose Polarons Open
Predicting the emergent properties of impurities immersed in a quantum bath is a fundamental challenge that can defy quasiparticle treatments. Here, we measure the spectral properties and real-time dynamics of mobile impurities injected in…
View article: Autoionization-Enhanced Rydberg Dressing by Fast Contaminant Removal
Autoionization-Enhanced Rydberg Dressing by Fast Contaminant Removal Open
Rydberg dressing is a powerful tool for entanglement generation in long-lived atomic states. While already employed effectively in several demonstrations, a key challenge for this technique is the collective loss triggered by blackbody-rad…
View article: Autoionization-enhanced Rydberg dressing by fast contaminant removal
Autoionization-enhanced Rydberg dressing by fast contaminant removal Open
Rydberg dressing is a powerful tool for entanglement generation in long-lived atomic states. While already employed effectively in several demonstrations, a key challenge for this technique is the collective loss triggered by blackbody-rad…
View article: Observation of Subdiffusive Dynamic Scaling in a Driven and Disordered Bose Gas
Observation of Subdiffusive Dynamic Scaling in a Driven and Disordered Bose Gas Open
We explore the dynamics of a tuneable box-trapped Bose gas under strong periodic forcing in the presence of weak disorder. In absence of interparticle interactions, the interplay of the drive and disorder results in an isotropic nonthermal…
View article: Multi-qubit gates and Schrödinger cat states in an optical clock
Multi-qubit gates and Schrödinger cat states in an optical clock Open
Many-particle entanglement is a key resource for achieving the fundamental precision limits of a quantum sensor. Optical atomic clocks, the current state-of-the-art in frequency precision, are a rapidly emerging area of focus for entanglem…
View article: Observation of subdiffusive dynamic scaling in a driven and disordered Bose gas
Observation of subdiffusive dynamic scaling in a driven and disordered Bose gas Open
We explore the dynamics of a tuneable box-trapped Bose gas under strong periodic forcing in the presence of weak disorder. In absence of interparticle interactions, the interplay of the drive and disorder results in an isotropic nonthermal…
View article: Realizing spin squeezing with Rydberg interactions in a programmable optical clock
Realizing spin squeezing with Rydberg interactions in a programmable optical clock Open
Neutral-atom arrays trapped in optical potentials are a powerful platform for studying quantum physics, combining precise single-particle control and detection with a range of tunable entangling interactions. For example, these capabilitie…
View article: Universal equation of state for wave turbulence in a quantum gas
Universal equation of state for wave turbulence in a quantum gas Open
Boyle's 1662 observation that the volume of a gas is, at constant temperature, inversely proportional to pressure, offered a prototypical example of how an equation of state (EoS) can succinctly capture key properties of a many-particle sy…
View article: Pinpointing Feshbach Resonances and Testing Efimov Universalities in $^{39}$K
Pinpointing Feshbach Resonances and Testing Efimov Universalities in $^{39}$K Open
Using a combination of bound-state spectroscopy and loss spectroscopy, we pinpoint eight intrastate Feshbach resonances in $^{39}$K, as well as six previously unexplored interstate ones. We also perform a detailed characterization of four …
View article: Anomalous localization and multifractality in a kicked quasicrystal
Anomalous localization and multifractality in a kicked quasicrystal Open
Multifractal states offer a "third way" for quantum matter, neither fully localized nor ergodic, exhibiting singular continuous spectra, self-similar wavefunctions, and transport and entanglement scaling exponents intermediate between exte…
View article: Observation of the Quantum Boomerang Effect
Observation of the Quantum Boomerang Effect Open
A particle in an Anderson-localized system, if launched in any direction,\nshould on average return to its starting point and stay there. Despite the\ncentral role played by Anderson localization in the modern understanding of\ncondensed m…
View article: Interaction-driven breakdown of dynamical localization in a kicked quantum gas
Interaction-driven breakdown of dynamical localization in a kicked quantum gas Open
Quantum interference can terminate energy growth in a continually kicked system, via a single-particle ergodicity-breaking mechanism known as dynamical localization. The effect of many-body interactions on dynamically localized states, whi…
View article: Observation of the Quantum Boomerang Effect
Observation of the Quantum Boomerang Effect Open
A particle in an Anderson-localized system, if launched in any direction, should on average return to its starting point and stay there. Despite the central role played by Anderson localization in the modern understanding of condensed matt…
View article: Interaction-driven breakdown of dynamical localization in a kicked quantum gas
Interaction-driven breakdown of dynamical localization in a kicked quantum gas Open
Quantum interference can terminate energy growth in a continually kicked system, via a single-particle ergodicity-breaking mechanism known as dynamical localization. The effect of many-body interactions on dynamically localized states, whi…
View article: Prethermal Dynamical Localization and the Emergence of Chaos in a Kicked Interacting Quantum Gas
Prethermal Dynamical Localization and the Emergence of Chaos in a Kicked Interacting Quantum Gas Open
While ergodicity is a fundamental postulate of statistical mechanics and implies that driven interacting systems inevitably heat, ergodic dynamics can be disrupted by quantum interference. Despite a quarter-century of experimental studies,…
View article: Transport controlled by Poincaré orbit topology in a driven inhomogeneous lattice gas
Transport controlled by Poincaré orbit topology in a driven inhomogeneous lattice gas Open
In periodic quantum systems which are both homogeneously tilted and driven, the interplay between drive and Bloch oscillations controls transport dynamics. Using a quantum gas in a modulated optical lattice, we show experimentally that inh…
View article: Probing Nonexponential Decay in Floquet–Bloch Bands
Probing Nonexponential Decay in Floquet–Bloch Bands Open
Exponential decay laws describe systems ranging from unstable nuclei to fluorescent molecules, in which the probability of jumping to a lower-energy state in any given time interval is static and history-independent. These decays, involvin…
View article: Controlling and characterizing Floquet prethermalization in a driven quantum system
Controlling and characterizing Floquet prethermalization in a driven quantum system Open
Periodic driving is a powerful tool for engineering tunable many-body quantum states. Such Floquet engineering relies on the existence of a localized prethermal regime, a state which remains incompletely understood. We report experiments o…