Manuele Landini - Academia.edu (original) (raw)
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Papers by Manuele Landini
Zenodo (CERN European Organization for Nuclear Research), Jul 31, 2023
Zenodo (CERN European Organization for Nuclear Research), Oct 4, 2023
Zenodo (CERN European Organization for Nuclear Research), Mar 29, 2023
Nature physics, Apr 9, 2024
Zenodo (CERN European Organization for Nuclear Research), 2024
Zenodo (CERN European Organization for Nuclear Research), Jun 11, 2021
Zenodo (CERN European Organization for Nuclear Research), Dec 14, 2023
Zenodo (CERN European Organization for Nuclear Research), Aug 3, 2023
Science advances, Feb 16, 2024
arXiv (Cornell University), Oct 17, 2023
arXiv (Cornell University), Jul 31, 2023
Dimensionality plays an essential role in determining the nature and properties of a physical sys... more Dimensionality plays an essential role in determining the nature and properties of a physical system. For quantum systems the impact of interactions and fluctuations is enhanced in lower dimensions, leading to a great diversity of genuine quantum effects for reduced dimensionality. In most cases, the dimension is fixed to some integer value. Here, we experimentally probe the dimensional crossover from two to one dimension using strongly interacting ultracold bosons in variable lattice potentials and compare the data to ab-initio theory that takes into account nonhomogeneous trapping and non-zero temperature. From a precise measurement of the momentum distribution we analyze the characteristic decay of the one-body correlation function in the two dimensionalities and then track how the decay is modified in the crossover. A varying two-slope structure is revealed, reflecting the fact that the particles see their dimensionality as being one or two depending on whether they are probed on short or long distances, respectively. Our observations demonstrate how quantum properties in the strongly-correlated regime evolve in the dimensional crossover as a result of the interplay between dimensionality, interactions, and temperature.
SciPost physics, Nov 30, 2023
We identify a route for the production of 87 Rb 133 Cs molecules in the X 1 Σ + rovibronic ground... more We identify a route for the production of 87 Rb 133 Cs molecules in the X 1 Σ + rovibronic ground state that is compatible with efficient mixing of the atoms in optical lattices. We first construct a model for the excited-state structure using constants found by fitting to spectroscopy of the relevant a 3 Σ + → b 3 Π 1 transitions at 181.5 G and 217.1 G. We then compare the predicted transition dipole moments from this model to those found for the transitions that have been successfully used for STIRAP at 181.5 G. We form molecules by magnetoassociation on a broad interspecies Feshbach resonance at 352.7 G and explore the pattern of Feshbach states near 305 G. This allows us to navigate to a suitable initial state for STIRAP by jumping across an avoided crossing with radiofrequency radiation. We identify suitable transitions for STIRAP at 305 G. We characterize these transitions experimentally and demonstrate STIRAP to a single hyperfine level of the ground state with a one-way efficiency of 85(4)%.
arXiv (Cornell University), Aug 8, 2023
Cold atomic gases provide a remarkable testbed to study the physics of interacting many-body quan... more Cold atomic gases provide a remarkable testbed to study the physics of interacting many-body quantum systems. They have started to play a major role as quantum simulators, given the high degree of control that is possible. A crucial element is given by the necessarily non-zero temperature. However cooling to the required ultralow temperatures or even simply measuring the temperature directly on the system can prove to be very challenging tasks. Here, we implement thermometry on strongly interacting two-and one-dimensional Bose gases with high sensitivity in the nano-Kelvin temperature range. Our method is aided by the fact that the decay of the first-order correlation function is very sensitive to the temperature when interactions are strong. We find that there may be a significant temperature variation when the three-dimensional quantum gas is cut into twodimensional slices or into one-dimensional tubes. Strikingly, the temperature for the one-dimensional case can be much lower than the initial temperature. Our findings show that this decrease results from the interplay of dimensional reduction and strong interactions.
arXiv (Cornell University), Mar 28, 2023
arXiv (Cornell University), Sep 26, 2022
We report on the observation of confinement-induced resonances for strong three-dimensional (3D) ... more We report on the observation of confinement-induced resonances for strong three-dimensional (3D) confinement in a lattice potential. Starting from a Mott-insulator state with predominantly singlesite occupancy, we detect loss and heating features at specific values for the confinement length and the 3D scattering length. Two independent models, based on the coupling between the centerof-mass and the relative motion of the particles as mediated by the lattice, predict the resonance positions to a good approximation, suggesting a universal behavior. Our results extend confinementinduced resonances to any dimensionality and open up an alternative method for interaction tuning and controlled molecule formation under strong 3D confinement.
APS Division of Atomic, Molecular and Optical Physics Meeting Abstracts, May 1, 2019
Review of Scientific Instruments, Mar 3, 2021
A simple method to generate arbitrary laser shapes for stimulated Raman adiabatic passage Review ... more A simple method to generate arbitrary laser shapes for stimulated Raman adiabatic passage Review of Scientific Instruments 92, 063206 (2021);
Review of Scientific Instruments, 2021
A simple method to generate arbitrary laser shapes for stimulated Raman adiabatic passage Review ... more A simple method to generate arbitrary laser shapes for stimulated Raman adiabatic passage Review of Scientific Instruments 92, 063206 (2021);
Bulletin of the American Physical Society, 2018
Zenodo (CERN European Organization for Nuclear Research), Jul 31, 2023
Zenodo (CERN European Organization for Nuclear Research), Oct 4, 2023
Zenodo (CERN European Organization for Nuclear Research), Mar 29, 2023
Nature physics, Apr 9, 2024
Zenodo (CERN European Organization for Nuclear Research), 2024
Zenodo (CERN European Organization for Nuclear Research), Jun 11, 2021
Zenodo (CERN European Organization for Nuclear Research), Dec 14, 2023
Zenodo (CERN European Organization for Nuclear Research), Aug 3, 2023
Science advances, Feb 16, 2024
arXiv (Cornell University), Oct 17, 2023
arXiv (Cornell University), Jul 31, 2023
Dimensionality plays an essential role in determining the nature and properties of a physical sys... more Dimensionality plays an essential role in determining the nature and properties of a physical system. For quantum systems the impact of interactions and fluctuations is enhanced in lower dimensions, leading to a great diversity of genuine quantum effects for reduced dimensionality. In most cases, the dimension is fixed to some integer value. Here, we experimentally probe the dimensional crossover from two to one dimension using strongly interacting ultracold bosons in variable lattice potentials and compare the data to ab-initio theory that takes into account nonhomogeneous trapping and non-zero temperature. From a precise measurement of the momentum distribution we analyze the characteristic decay of the one-body correlation function in the two dimensionalities and then track how the decay is modified in the crossover. A varying two-slope structure is revealed, reflecting the fact that the particles see their dimensionality as being one or two depending on whether they are probed on short or long distances, respectively. Our observations demonstrate how quantum properties in the strongly-correlated regime evolve in the dimensional crossover as a result of the interplay between dimensionality, interactions, and temperature.
SciPost physics, Nov 30, 2023
We identify a route for the production of 87 Rb 133 Cs molecules in the X 1 Σ + rovibronic ground... more We identify a route for the production of 87 Rb 133 Cs molecules in the X 1 Σ + rovibronic ground state that is compatible with efficient mixing of the atoms in optical lattices. We first construct a model for the excited-state structure using constants found by fitting to spectroscopy of the relevant a 3 Σ + → b 3 Π 1 transitions at 181.5 G and 217.1 G. We then compare the predicted transition dipole moments from this model to those found for the transitions that have been successfully used for STIRAP at 181.5 G. We form molecules by magnetoassociation on a broad interspecies Feshbach resonance at 352.7 G and explore the pattern of Feshbach states near 305 G. This allows us to navigate to a suitable initial state for STIRAP by jumping across an avoided crossing with radiofrequency radiation. We identify suitable transitions for STIRAP at 305 G. We characterize these transitions experimentally and demonstrate STIRAP to a single hyperfine level of the ground state with a one-way efficiency of 85(4)%.
arXiv (Cornell University), Aug 8, 2023
Cold atomic gases provide a remarkable testbed to study the physics of interacting many-body quan... more Cold atomic gases provide a remarkable testbed to study the physics of interacting many-body quantum systems. They have started to play a major role as quantum simulators, given the high degree of control that is possible. A crucial element is given by the necessarily non-zero temperature. However cooling to the required ultralow temperatures or even simply measuring the temperature directly on the system can prove to be very challenging tasks. Here, we implement thermometry on strongly interacting two-and one-dimensional Bose gases with high sensitivity in the nano-Kelvin temperature range. Our method is aided by the fact that the decay of the first-order correlation function is very sensitive to the temperature when interactions are strong. We find that there may be a significant temperature variation when the three-dimensional quantum gas is cut into twodimensional slices or into one-dimensional tubes. Strikingly, the temperature for the one-dimensional case can be much lower than the initial temperature. Our findings show that this decrease results from the interplay of dimensional reduction and strong interactions.
arXiv (Cornell University), Mar 28, 2023
arXiv (Cornell University), Sep 26, 2022
We report on the observation of confinement-induced resonances for strong three-dimensional (3D) ... more We report on the observation of confinement-induced resonances for strong three-dimensional (3D) confinement in a lattice potential. Starting from a Mott-insulator state with predominantly singlesite occupancy, we detect loss and heating features at specific values for the confinement length and the 3D scattering length. Two independent models, based on the coupling between the centerof-mass and the relative motion of the particles as mediated by the lattice, predict the resonance positions to a good approximation, suggesting a universal behavior. Our results extend confinementinduced resonances to any dimensionality and open up an alternative method for interaction tuning and controlled molecule formation under strong 3D confinement.
APS Division of Atomic, Molecular and Optical Physics Meeting Abstracts, May 1, 2019
Review of Scientific Instruments, Mar 3, 2021
A simple method to generate arbitrary laser shapes for stimulated Raman adiabatic passage Review ... more A simple method to generate arbitrary laser shapes for stimulated Raman adiabatic passage Review of Scientific Instruments 92, 063206 (2021);
Review of Scientific Instruments, 2021
A simple method to generate arbitrary laser shapes for stimulated Raman adiabatic passage Review ... more A simple method to generate arbitrary laser shapes for stimulated Raman adiabatic passage Review of Scientific Instruments 92, 063206 (2021);
Bulletin of the American Physical Society, 2018