Institut de Ciències Fotòniques: Recent submissions
Now showing items 1-20 of 269
Transcranial diffuse optical measurements of pulsatility derived parameters for neuromonitoring applications
(English) Diffuse optics are non-invasive and continuous techniques using near-infrared light which allow for comfortable bed-site monitoring of microvascular cerebral hemodynamics, oxygenation and metabolism. Here, diffuse ...
Imaging and analytical tools to study the spatiotemporal dynamics of protein export
(English) Intracellular trafficking, particularly protein secretion, faces numerous unresolved challenges. This thesis aims to provide and evaluate tools for quantitative investigation of these processes using fluorescent ...
Optimization with spin glass models
(English) With applicability on almost every aspect of our lives, optimization problems are ubiquitous to a broad range of fields within both scientific research and industrial environments. As such, these are growing in ...
Nonlocal and nonlinear effects in nanophotonics
(English) The fundamental science and technological applications of light-matter interactions on nanometer length scales form the field of study known as nanophotonics. Explorations in nanophotonics expand our understanding ...
Fundamentals of nonlinear interferometers and its use for optical coherence tomography
(English) This thesis, mostly experimental, is based on two fundamental pillars: nonlinear interferometers and Optical Coherence Tomography (OCT). Nonlinear interferometers are a class of interferometers that exhibit ...
Nanoscale manipulation of optical fields
(English) Besides its relevant fundamental interest, the in-depth understanding of light-matter interactions at the nanoscale has a profound impact on modern technological applications in diverse areas including ...
Novel quantum interactions between light and dense atomic media
(English) The interface between light and cold atomic ensembles is a fundamental platform to unravel the quantum world and develop quantum technological applications. Its success relies on the simple idea that the efficiency ...
Multifunctional optical surfaces for optoelectronic devices
(English) Highly transparent optical surfaces with anti-reflection (AR) and self-cleaning properties have the potential to increase performance in a wide range of applications, such as display screens, photovoltaic cells ...
Comprehensive monitoring of the injured brain by hybrid diffuse optics: towards brain-oriented theranostics
(English) In the intensive care, the multimodal monitoring of the patient is crucial. The systemic physiology is routinely and comprehensively monitored but the practical monitoring of the brain is lacking. Hybrid diffuse ...
Optimization and geometry for quantum information tasks
(English) In this thesis, we study the optimization of operational tasks that involve the manipulation of quantum resources. In most cases, such optimizations are aided by understanding the geometric properties of the ...
Information and thermodynamics
(English) The modern understanding of physics is deeply linked with the concept of information. The revival of the study of quantum mechanics in the form of quantum information is just an example of a more general trend ...
Cavity-enhanced non-destructive measurements of atomic magnetism
(English) In this work we propose and demonstrate cavity-enhanced polarization rotation to detect magnetic effects in transparent media with greater sensitivity at equal optical disturbance to the atomic medium. We use the ...
Harnessing quantum dynamics: heat engines, negative temperatures, and dynamical spectroscopy
(English) n this thesis, our main objective is to utilize different kinds of quantum dynamics as resources. To do so, we investigate thermodynamics, non-equilibrium steady states, and dynamical spectroscopy in order to ...
Exploring graphene artificial superlattices and hydrodynamic plasmons
(English) Graphene has revolutionized the field of condensed matter physics over the last two decades, emerging as an outstanding research platform. This is because graphene electrons behave as massless Dirac fermions, ...
Application and development of diffuse optical methods for the non-invasive bedside assessment of cerebral hemodynamics in the stroke unit
(English) The brain is an organ with a large energy budget compared to its volume and weight and constantly requires oxygen-rich blood to meet its metabolic needs. Given this fact, a tool that enables the continuous ...
Light-matter entanglement between telecom photons and solid-state quantum memories
(English) Future networks for quantum communication will require a new form of technology in order to operate over long distances. The no-cloning theorem precludes the use of amplification, so quantum repeater schemes have ...
Investigation of the interaction driven quantum phases in magic-angle twisted bilayer graphene
(English) The discovery of two dimensional materials opened a unique pathway to study the electronic properties of quantum materials which are otherwise absent in bulk systems. Soon after the discovery of graphene (2004), ...
Reconfigurable metasurfaces based on thermo-optical and optomechanical controls
(English) Optical metasurfaces established themselves as potential platform for planar and integrated optics. Progress in the material sciences and fabrication process paves the way towards ultra-thin metasurface based ...
A liquid-to-solid transition governs neuronal mechanotransduction during touch in Caenorhabditis elegans
(English) In recent years, our understanding of the ion channels and receptors that orchestrate the conversion of physical stimuli into physiological signals has deepened significantly. Nevertheless, there remains some ...
Hybrid diffuse optics methods to assess the emergence of dementia in older adults
(English) Hybrid diffuse optical devices offer a non-invasive and continuous and cost-effective method for monitoring cerebral blood flow and metabolism on the bedside use and realistic simulation applications. The ...
