Institut de Ciències Fotòniques
Recent Submissions
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Simulating a topological gauge theory in a Raman-dressed Bose-Einstein condensate
(Universitat Politècnica de Catalunya, 2022-04-24)
Doctoral thesis
Open AccessUltracold quantum gases constitute a powerful and versatile tool to experimentally explore quantum many-body physics. This thesis presents an original contribution to the quantum simulation of gauge theories with ultracold ... -
Further into the infrared with quantum dot photodetectors
(Universitat Politècnica de Catalunya, 2022-02-04)
Doctoral thesis
Open AccessIn the infrared, photodetectors are the key components in a wide-variety of applications such as thermal imaging, remote sensing, spectroscopy with newer technologies added to the list such as LiDaR and deep tissue imaging. ... -
Spatiotemporal organisation of protein nanoclusters in adhesion complexes
(Universitat Politècnica de Catalunya, 2022-02-28)
Doctoral thesis
Open AccessThe main goal of this thesis was to contribute to the understanding of the nanoscale lateral organisation of key proteins in adhesion complexes. For this, we exploited single molecule localisation-based super-resolution ... -
Photodetectors based on graphene pn-junctions for mid-infrared and terahertz range
(Universitat Politècnica de Catalunya, 2022-01-27)
Doctoral thesis
Open AccessLong wavelength light contains the infrared and terahertz (THz) spetral range of the spectrum. This wavelength range spans approximately from 1 µm to 1 mm. Several applications can be explored in this spectral range such ... -
Inhomogeneity and disorder in ultrafast phase transitions
(Universitat Politècnica de Catalunya, 2022-01-31)
Doctoral thesis
Open AccessIn the recent decades, there has been a surge of interest in the wide array of emergent phenomena found in strongly correlated materials. Understanding the inner workings of this type of systems is a major challenge due ... -
Versatile nonlinear frequency conversion sources in the near- and mid-infrared
(Universitat Politècnica de Catalunya, 2022-03-11)
Doctoral thesis
Open AccessTunable laser sources in different spectral regions are of interest for a variety of applications including spectroscopy, trace gas sensing, medical diagnostics, LIDAR and material processing. Existing lasers have limited ... -
Optomechanical resonators based on low dimensional materials
(Universitat Politècnica de Catalunya, 2021-07-07)
Doctoral thesis
Open AccessMechanical resonators based on low dimensional materials have attracted a lot of attention due to their remarkable properties. Their ultra-low mass and high Q factors make them exceptional sensors, offering new possibilities ... -
Spinor Bose-Einstein comagnetometer and interhyperfine interactions in 87Rb
(Universitat Politècnica de Catalunya, 2021-09-28)
Doctoral thesis
Open AccessIn this work we demonstrate the first realization of a comagnetormeter in the ultracold regime. In comparison to regular magnetometers, which are designed to maximize their magnetic field sensitivity, a comagnetometer uses ... -
A versatile system for the study of light-matter interactions at the level of individual particles
(Universitat Politècnica de Catalunya, 2022-02-25)
Doctoral thesis
Open AccessIn this thesis, a single-atom trap in a "Maltese cross'' geometry (MCG) was designed, built up and characterized. A MCG atom trap uses four in-vacuum lenses to achieve four-directional high-numerical-aperture optical ... -
Witnessing non-Markovian evolutions
(Universitat Politècnica de Catalunya, 2021-06-22)
Doctoral thesis
Open AccessThe formulation of quantum physics stands among the most revolutionary theories of the twentieth century. During the first decades of this century, many phenomena concerning the microscopic world were unexplained or had ... -
Exploring twisted bilayer graphene with nano-optics
(Universitat Politècnica de Catalunya, 2021-10-20)
Doctoral thesis
Open AccessNano-optics studies the behaviour of light on the nanoscale. In particular, it probes the interaction of light with objects, often of nanometre-size, and reveals fine details of the material's optical properties. Optoelectronics ... -
Narrowband photon pairs for atoms: high resolution spectral engineering and characterisation
(Universitat Politècnica de Catalunya, 2021-12-16)
Doctoral thesis
Open AccessThis thesis describes experimental work to generate and characterise single photons and photon pairs, with frequency content suitable for controlled interaction with cold rubidium atoms. We describe a photon-pair source, ...
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