Giulia Del Pace
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View article: Cavity-mediated charge and pair-density waves in a unitary Fermi gas
Cavity-mediated charge and pair-density waves in a unitary Fermi gas Open
Coherent light-matter interactions between a quantum gas and light in a high-finesse cavity can drive self-ordering phase transitions. To date, such phenomena have involved exclusively single-atom coupling to light, resulting in coupled ch…
View article: Measuring mutual friction in superfluids: the role of initial vortex configuration fluctuations
Measuring mutual friction in superfluids: the role of initial vortex configuration fluctuations Open
The physical origin of mutual friction in quantum fluids is deeply connected to the fundamental nature of superfluidity. It stems from the interaction between the superfluid and normal components, mediated by the dynamics of quantized vort…
View article: A low-impedance radio-frequency circuit for fast spin manipulations in cold alkali atoms
A low-impedance radio-frequency circuit for fast spin manipulations in cold alkali atoms Open
We design and implement a low-impedance, high-current radio-frequency (RF) circuit, enabling fast coherent coupling between magnetic levels in cold alkali atomic samples. It is based on a compact, shape-optimized coil that maximizes the RF…
View article: Measuring mutual friction in superfluids: the role of initial vortex configuration fluctuations
Measuring mutual friction in superfluids: the role of initial vortex configuration fluctuations Open
The physical origin of mutual friction in quantum fluids is deeply connected to the fundamental nature of superfluidity. It stems from the interaction between the superfluid and normal components, mediated by the dynamics of quantized vort…
View article: Nonequilibrium Dynamics of Long-Range Interacting Fermions
Nonequilibrium Dynamics of Long-Range Interacting Fermions Open
A fundamental problem of out-of-equilibrium physics is the speed at which the order parameter grows upon crossing a phase transition. Here, we investigate the ordering dynamics in a Fermi gas undergoing a density-wave phase transition indu…
View article: Direct production of fermionic superfluids in a cavity-enhanced optical dipole trap
Direct production of fermionic superfluids in a cavity-enhanced optical dipole trap Open
We present the production of quantum degenerate, superfluid gases of ^6 Li through direct evaporative cooling in a cavity-enhanced optical dipole trap. The entire evaporative cooling process is performed in a trap created by the TEM _{0…
View article: Mutual friction and vortex Hall angle in a strongly interacting Fermi superfluid
Mutual friction and vortex Hall angle in a strongly interacting Fermi superfluid Open
The motion of a quantized vortex is intimately connected with its microscopic structure and the elementary excitations of the surrounding fluid. In this work, we investigate the two-dimensional motion of a single vortex orbiting a pinned a…
View article: Direct production of fermionic superfluids in a cavity-enhanced optical dipole trap
Direct production of fermionic superfluids in a cavity-enhanced optical dipole trap Open
We present the production of quantum degenerate, superfluid gases of $^6$Li through direct evaporative cooling in a cavity-enhanced optical dipole trap. The entire evaporative cooling process is performed in a trap created by the TEM$_{00}…
View article: Shapiro steps in strongly-interacting Fermi gases
Shapiro steps in strongly-interacting Fermi gases Open
We report the observation of Shapiro steps in a periodically driven Josephson junction between strongly-interacting Fermi superfluids of ultracold atoms. We observe quantized plateaus in the current-potential characteristics, the height an…
View article: Stabilizing persistent currents in an atomtronic Josephson junction necklace
Stabilizing persistent currents in an atomtronic Josephson junction necklace Open
Arrays of Josephson junctions are at the forefront of research on quantum circuitry for quantum computing, simulation and metrology. They provide a testing bed for exploring a variety of fundamental physical effects where macroscopic phase…
View article: Decay of Persistent Currents in Annular Atomic Superfluids
Decay of Persistent Currents in Annular Atomic Superfluids Open
We investigate the role of vortices in the decay of persistent current states of annular atomic superfluids by solving numerically the Gross–Pitaevskii equation, and we directly compare our results with the 6Li experiment at LENS data. We …
View article: Decay of persistent currents in annular atomic superfluids
Decay of persistent currents in annular atomic superfluids Open
We investigate the role of vortices in the decay of persistent current states of annular atomic superfluids by solving numerically the Gross-Pitaevskii equation, and we directly compare our results with experimental data from Ref. [1]. We …
View article: Connecting shear-flow and vortex array instabilities in annular atomic superfluids
Connecting shear-flow and vortex array instabilities in annular atomic superfluids Open
At the interface between two fluid layers in relative motion, infinitesimal fluctuations can be exponentially amplified, inducing vorticity and the breakdown of the laminar flow. This process, known as the Kelvin-Helmholtz instability, is …
View article: Imprinting Persistent Currents in Tunable Fermionic Rings
Imprinting Persistent Currents in Tunable Fermionic Rings Open
Persistent currents in annular geometries have played an important role in disclosing the quantum phase coherence of superconductors and mesoscopic electronic systems. Ultracold atomic gases in multiply connected traps also exhibit long-li…
View article: Imprinting persistent currents in tunable fermionic rings
Imprinting persistent currents in tunable fermionic rings Open
Persistent currents in annular geometries have played an important role in disclosing the quantum phase coherence of superconductors and mesoscopic electronic systems. Ultracold atomic gases in multiply connected traps also exhibit long-li…
View article: Tunneling Transport of Unitary Fermions across the Superfluid Transition
Tunneling Transport of Unitary Fermions across the Superfluid Transition Open
We investigate the transport of a Fermi gas with unitarity-limited interactions across the superfluid phase transition, probing its response to a direct current (dc) drive through a tunnel junction. As the superfluid critical temperature i…
View article: Sound emission and annihilations in a programmable quantum vortex collider
Sound emission and annihilations in a programmable quantum vortex collider Open
In quantum fluids, the quantization of circulation forbids the diffusion of a vortex swirling flow seen in classical viscous fluids. Yet, accelerating quantum vortices may lose their energy into acoustic radiations1,2, similar to the way e…
View article: Data for "Strongly correlated superfluid order parameters from dc Josephson supercurrents"
Data for "Strongly correlated superfluid order parameters from dc Josephson supercurrents" Open
This dataset contains the experimental data and the code to generate the theoretical models in the paper "Strongly correlated superfluid order parameters from dc Josephson supercurrents". Data tables and scripts to generate the theoretical…
View article: Data for "Strongly correlated superfluid order parameters from dc Josephson supercurrents"
Data for "Strongly correlated superfluid order parameters from dc Josephson supercurrents" Open
This dataset contains the experimental data and the code to generate the theoretical models in the paper "Strongly correlated superfluid order parameters from dc Josephson supercurrents". Data tables and scripts to generate the theoretical…