Programa de Doctorat en Fotònica: Recent submissions
Now showing items 61-80 of 268
Multiple light scattering in atomic media : from metasurfaces to the ultimate refractive index
(English) Our ability to confine, guide, and bend light has led to astonishing technological achievements, playing a fundamental role in diverse fields like microscopy, photochemistry, telecommunications or material design. ...
Graphene based optical interconnects and IR photodetectors
(English) Despite the extensive research in the semiconductor industry, Moore’s law is finally slowing down due to increased complexity. Hence, intense efforts are being carried out to explore hybrid solutions by adding ...
Mid-infrared surface sensing based ontTwo-dimensional materials
(English) Mid-infrared (mid-IR) spectroscopy in the wavelength region between 2 and 20 µm is a powerful technique to identify vibrational absorption signatures of molecules, finding in this way extensive applications in ...
Raman dressed Bose-Einstein condensates with tunable interactions: topological gauge theories and supersolids
(English) The exquisite control available in atomic ultracold quantum gases experiments makes them an ideal candidate for quantum simulation of diverse topics ranging from high energy physics and analogue quantum gravity ...
Quantum-enhanced imaging with SPAD array cameras
(English) Entangled photon pairs can enhance optical imaging capabilities. Phase imaging allows detecting fine detail of transparent samples without potentially invasive fluorescent labelling, and here entanglement enables ...
Investigating quantum many-body systems with tensor networks, machine learning and quantum computers
(English) We perform quantum simulation on classical and quantum computers and set up a machine learning framework in which we can map out phase diagrams of known and unknown quantum many-body systems in an unsupervised ...
Contributions to nanophotonics: linear, nonlinear and quantum phenomena
(English) Nanophotonics can be defined as the science and technology studying the control optical fields at the nanoscale and their interaction with matter. In order to spatially control such fields we would need structures ...
Resource theories of quantum dynamics
(English) As one of our most successful theories, quantum theory has greatly strengthened our understanding of nature and significantly advanced technologies. Specifically, quantum effects provide advantages in a broad ...
Squeezed-ligh-enhanced magnetometry in a high density atomic vapor
(English) This thesis describes experiments that employ squeezed light to improve the performance of a sensitive optically-pumped magnetometer (OPM). The squeezed light source employs parametric amplification of vacuum ...
Quantum many-body physics with ultracold atoms and molecules: exact dynamics and machine learning
(English) Quantum many-body physics poses a substantial computational challenge resulting from the exponential growth of the wave function complexity and many non-trivial correlations encoded in it. Studying many-body ...
Synthetic quantum matter using atoms and light
Atomic and optical physics are two fields closely connected by a shared range of energy scales, and the interactions between them. Atoms represent the most fundamental components of matter, and interactions with electromagnetic ...
Laser-induced electron interferences from atoms and molecules
Since discovering wave-particle duality, science has changed our perception of light and matter, especially at the subatomic level. Thanks to such discoveries, we have been able to develop and expand our scientific knowledge ...
Development of novel multimodal light-sheet fluorescence microscopes for in-vivo imaging of vertebrate organisms
The observation of biological processes in their native environments is of critical importance for life science. While substantial information can be derived from the examination of in-vitro biological samples, in-vivo ...
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 ...
Quantum Optics at its best: from quantum interferometry to quantum metrology
Quantum optics experiments are currently the most advanced techniques to under- stand, verify and simulate quantum phenomena. However, to access all the perfor- mance available in quantum states of light, one needs to ...
Detection of particles, bacteria and viruses using consumer optoelectronic components
The focus of this thesis is on the design, development and validation of two novel photonic sensors for the detection and characterisation of industrial and biological samples. The first one is a PSA in a collimated beam ...
Controlling interactions in quantum materials : from a microscopic description to quantum simulation
The last decades have witnessed impressive technical advances in all the fields of quantum science, including solid-state systems or atomic, molecular, and optical physics, allowing one to control materials at the microscopic ...
Detection of a single erbium ion in a nanoparticle
Encoding information into quantum mechanical properties of a system can lead to applications many fields, including computing and communication. Devices that will enable these applications could be part of a quantum network ...
High-peak-power mid-infrared OPCPAs for extreme nonlinear photonics
In the last decades, intense carrier-envelope-phase-stable (CEP-stable) and near-single-cycle, coherent mid-infrared sources have become charming for a variety of applications in physics, chemistry and biology. In particular, ...
Mechanisms and functions of the nucleus as a mechano-controller of cell contractility and migration plasticity
Living tissues are crowded and dynamic environments, in which signalling molecules and physical forces constantly act on single cells. To ensure correct tissue development and homeostasis, cells function like small processors: ...
