Probing atoms and molecules close to macroscopic bodies
- URL: http://arxiv.org/abs/2312.10811v2
- Date: Tue, 19 Dec 2023 09:10:52 GMT
- Title: Probing atoms and molecules close to macroscopic bodies
- Authors: Athanasios Laliotis
- Abstract summary: I briefly present my work on trapping atomic clouds in micro-pyramids fabricated on silicon chips.
I describe the research carried out at the Laboratoire de Physique des Lasers in the SAI group.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: In this habilitation thesis, I briefly present my work at Imperial College
London on trapping atomic clouds in micro-pyramids fabricated on silicon chips,
which led to the fabrication of an on-chip integrated atom source. Next, I
describe the research carried out at the Laboratoire de Physique des Lasers in
the SAI group. Our experiments demonstrated the temperature dependence of
near-field Casimir-Polder interactions due to thermal excitation of surface
waves, thus advancing our understanding of the dielectric properties of matter
and the quantum vacuum that surrounds it. I also present spectroscopic
experiments with atomic vapors confined in nanostructures (nano-sphere opals)
aiming at the fabrication of miniature frequency references. Finally, I explore
the possibility of performing spectroscopic experiments on molecular gases
close to surfaces.
Related papers
- Time-resolved pairing gap spectroscopy in a quantum simulator of fermionic superfluidity inside an optical cavity [0.0]
We leverage the multilevel internal structure of the atoms to study the physics of Cooper pair breaking in this system.
The latter is found to depend on the populations of the internal atomic states, reflecting the chemical potential dependence predicted in fermionic superfluids.
arXiv Detail & Related papers (2024-08-22T18:00:00Z) - Impact of molecular properties on diffraction at nanomasks with low
charge density [0.0]
We show that ion-beam milling using neon facilitates the fabrication of lowly-charged nanomasks in gold-capped silicon nitride membranes.
This allows us to observe the diffraction of polar molecules with a four times larger electric dipole moment than in previous experiments.
arXiv Detail & Related papers (2024-01-11T11:56:23Z) - The strongly driven Fermi polaron [49.81410781350196]
Quasiparticles are emergent excitations of matter that underlie much of our understanding of quantum many-body systems.
We take advantage of the clean setting of homogeneous quantum gases and fast radio-frequency control to manipulate Fermi polarons.
We measure the decay rate and the quasiparticle residue of the driven polaron from the Rabi oscillations between the two internal states.
arXiv Detail & Related papers (2023-08-10T17:59:51Z) - Efficient Reduction of Casimir Forces by Self-assembled Bio-molecular
Thin Films [62.997667081978825]
Casimir forces, related to London-van der Waals forces, arise if the spectrum of electromagnetic fluctuations is restricted by boundaries.
We experimentally investigate the influence of self-assembled molecular bio and organic thin films on the Casimir force between a plate and a sphere.
We find that molecular thin films, despite being a mere few nanometers thick, reduce the Casimir force by up to 14%.
arXiv Detail & Related papers (2023-06-28T13:44:07Z) - Dynamics of molecular rotors in bulk superfluid helium [68.8204255655161]
We report on the experimental study of the laser-induced rotation of helium dimers inside the superfluid $4mathrmHe$ bath at variable temperature.
The observed temperature dependence suggests a non-equilibrium evolution of the quantum bath, accompanied by the emission of the wave of second sound.
arXiv Detail & Related papers (2023-04-08T01:22:19Z) - Few-body analogue quantum simulation with Rydberg-dressed atoms in
optical lattices [0.913755431537592]
We investigate the possibility of realizing problems akin to those found in quantum chemistry.
We show that simple pseudo-atoms and -molecules could be prepared with high fidelity in state-of-the-art experiments.
arXiv Detail & Related papers (2022-11-28T19:00:21Z) - Optical Characterization of a Single Quantum Emitter Based on Vanadium
Phthalocyanine Molecules [0.0]
Vanadium-oxide phthalocyanine (VOPc) molecules stand out as promising candidates due to their large coherence times measured in ensemble.
We show that single VOPc molecules with stable optical properties at room temperature can be isolated.
arXiv Detail & Related papers (2022-09-20T16:37:18Z) - Relativistic aspects of orbital and magnetic anisotropies in the
chemical bonding and structure of lanthanide molecules [60.17174832243075]
We study the electronic and ro-vibrational states of heavy homonuclear lanthanide Er2 and Tm2 molecules by applying state-of-the-art relativistic methods.
We were able to obtain reliable spin-orbit and correlation-induced splittings between the 91 Er2 and 36 Tm2 electronic potentials dissociating to two ground-state atoms.
arXiv Detail & Related papers (2021-07-06T15:34:00Z) - Visualizing spinon Fermi surfaces with time-dependent spectroscopy [62.997667081978825]
We propose applying time-dependent photo-emission spectroscopy, an established tool in solid state systems, in cold atom quantum simulators.
We show in exact diagonalization simulations of the one-dimensional $t-J$ model that the spinons start to populate previously unoccupied states in an effective band structure.
The dependence of the spectral function on the time after the pump pulse reveals collective interactions among spinons.
arXiv Detail & Related papers (2021-05-27T18:00:02Z) - Experimental decoherence in molecule interferometry [0.0]
Complex molecules are intriguing objects at the interface between quantum and classical phenomena.
They feature a much more complicated internal structure, but can still behave as quantum objects in their center-of-mass motion.
arXiv Detail & Related papers (2021-01-20T17:00:42Z) - The limit of spin lifetime in solid-state electronic spins [77.34726150561087]
We provide a complete first-principles picture of spin relaxation that includes up to two-phonon processes.
We study a vanadium-based molecular qubit and reveal that the spin lifetime at high temperature is limited by Raman processes.
arXiv Detail & Related papers (2020-04-08T14:27:36Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.