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Universitat Politècnica de Catalunya
Visualitzant Programa de Doctorat en Fotònica per títol
Ara mostrant els elements 1-20 de 288
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 ...
A machine learning ride in the physics theme park: from quantum to biophysics
(English) The integration of artificial intelligence into research is propelling progress and discoveries across the entire scientific landscape. Artificial intelligence tools boost the development of novel scientific ...
A non-linear carbon nanotube mechanical resonator near the quantum ground state of motion
(English) This thesis describes the design, fabrication, and measurement of gate-defined quantum dots embedded in suspended carbon nanotubes. The mechanical vibrations of the nanotube couple strongly to the quantum dots ...
A strontium quantum-gas microscope
(English) The development of quantum-gas microscopes has revolutionized the field of quantum simulation with ultracold atoms. More specifically, their ability of direct observation and manipulation of degenerate quantum ...
A variety of optimization techniques applied in the context of quantum information theory
(English) The thesis considers a number of optimisation techniques applied in the context of quantum information theory. After a pedagogical introduction of both quantum information theory and optimisation, it considers ...
A versatile system for the study of light-matter interactions at the level of individual particles
In 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 ...
Active control of surface plasmons in hybrid nanostructures
Plasmonics nanostructures are becoming remarkably important as tools towards manipulating photons at the nanoscale. They are poised to revolutionize a wide range of applications ranging from integrated optical circuits, ...
Advanced nanoantenna platforms for enhanced single-molecule detection at high concentrations
(English) The ability to study the dynamics of individual biomolecules is crucial to understanding the complex organization of biological systems beyond what can be learned from ensemble averages. These single-molecule ...
Advanced single molecule fluorescent tools to reveal spatiotemporal multi-molecular interactions in living cells
(English) The spatiotemporal organisation and compartmentalisation of molecules in living cells is crucial to regulate cell function. Dysregulation in how molecules dynamically explore their environment and interact with ...
All optical manipulation of a single nitrogen-vacancy centre in nanodiamond
The efficient interaction of photons with single quantum emitters like nitrogen vacancy (NV) centres is essential for the elaboration of future integrated quantum optical devices. A promising strategy towards this goal ...
Anomalous diffusion : from life to machines
Diffusion refers to numerous phenomena, by which particles and bodies of all kinds move throughout any kind of material, has emerged as one of the most prominent subjects in the study of complex systems. Motivated by the ...
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 ...
Atomic imaging of complex molecular
One of the significant challenges of modern science is to track and image chemical reactions as they occur. The molecular movies, the precise spatiotemporal tracking of changes in their molecular dynamics, will provide a ...
Atomic quantum metrology with narrowband entangled and squeezed states of light
The use of light, especially of laser light, is in many cases the most sensitive way to perform measurements. However, the highest sensitivity that can be achieved with laser light as probe is bounded by the standard quantum ...
Attosecond soft X-ray absorption revealing the ultrafast non-adiabatic dynamics of furan
(English) One of the fundamental goals of the physical chemistry community has always been to be able to follow the details of the evolution of chemical reactions in real-time. Besides the extreme temporal resolution ...
Attosecond X-ray absorption fine-structure spectroscopy in condensed matter
Attoscience aims to study electron dynamics in matter with unprecedented temporal resolution by using the shortest pulses generated on Earth. Currently, such resolution is only provided by sources that deliver attosecond ...
Bell inequalities for device-independent protocols
The technological era that we live in is sometimes described as the Information Age. Colossal amounts of data are generated every day and considerable effort is put into creating technologies to process, store and transmit ...
Bell nonlocality and causal networks
(English) Understanding the cause and effect relationships behind observed correlations is central to how we reason and interact with the world. Causal relationships help us make sense of the patterns we observe and predict ...
Bound states in the continuum in planar anisotropic structures
Bound states in the continuum (BICs) are modes that remain radiationless though they exist in the part of the spectrum that corresponds to radiating waves. They are a general wave phenomenon and following initial theoretical ...
Bridging fast volumetric imaging and mechanical stimulation: a platform for studying mechanosensitive neurons functionality onset in C. elegans embryos
(English) In Caenorhabditis elegans, the embryo develops within the protective confines of an eggshell, shielded from direct interactions with the outside world. In this isolated environment, neuronal mechanosensory circuits, ...
