Charge carrier dynamics and interfaces in perovskite solar cells 

Rueda Delgado, Diana Paola (Date of defense: 2019-07-30)

Organometal halide perovskites for solar cells are hybrid semiconductors that recently have caught the attention of the scientific community due to its excellent performance and attractive optical properties. Since then, ...

Classical and quantum aspects of the optical response at the nanoscale 

Martínez Saavedra, José Ramón (Date of defense: 2018-12-10)

Nanophotonics is one of today’s basic sciences and technologies: an in-depth understanding of the interaction between light and matter on the nano-scale, besides its intrinsic associated scientific interest, enables the ...

Coherent control of nonlinear optical processes in individual nanoparticles 

Accanto, Nicolò (Date of defense: 2016-06-16)

Nanophotonics aims to understand and control the interaction of light-matter at the nanometer scale. Boosted by the development of nanotechnology and nanofabrication, nanophotonics is a thriving research field, with ...

Coherent sensing of magnetic waveforms with spin-squeezed atoms 

Martin Ciurana, Ferran (Date of defense: 2017-12-14)

Optical magnetometers use magnetically-sensitive atomic ensembles and optical read-out to detect the amplitude of magnetic fields. They have become the most sensitive instruments for measuring low-frequency magnetic fields ...

A cold-atom approach to topological quantum matter across the energy scale 

González Cuadra, Daniel (Date of defense: 2020-12-11)

The outstanding progress achieved in the last decades to isolate and manipulate individual quantum systems has revolutionized the way in which quantum many-body phenomena, appearing across Nature's different energy scales, ...

Complex systems for quantum technologies 

Braungardt, Sibylle (Date of defense: 2011-07-12)

Continuous-wave optical parametric oscillators and frequency conversion sources from the ultraviolet to the mid-infrared 

Devi, Kavita (Date of defense: 2013-10-24)

High-power, continuous-wave (cw) optical parametric oscillators (OPOs), from the ultraviolet (UV) and visible to the near- and mid-infrared (IR) wavelength range, are of interest for a variety of applications such as ...

Contributions to nanophotonics: linear, nonlinear and quantum phenomena 

Roque Fernández, Pablo Manuel de (Date of defense: 2022-10-18)

(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 ...

Control of optical fields and single photon emitters by advanced nanoantenna structures 

Neumann, Lars (Date of defense: 2012-04-18)

Un tema central en la ciencia y la tecnología es la exploración y explotación de sistemas cada vez más pequeños por medio de técnicas ópticas. A menudo, la longitud de onda viene dictada por el sistema de interés: los ...

Controlling interactions in quantum materials : from a microscopic description to quantum simulation 

Julià Farré, Sergi (Date of defense: 2022-06-28)

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 ...

Controlling the multipolar interference of nanoantennas 

Hancu, Ion Michael (Date of defense: 2019-01-18)

The emission and detection of light is a main pillar of both fundamental research and the advancement of modern technologies. From digital communications and quantum computing to novel cancer treatments and faded jeans, ...

Copper indium sulfide colloidal quantum dot solar cells 

So, David (Date of defense: 2016-10-19)

The ubiquity of solar energy conversion technology is an exciting target which we aspire for in this century. Colloidal quantum dot (CQD) solar cells are an attractive platform, being low-cost and allowing facile control ...

Correlates of cerebral vasoreactivity measured by non-invasive diffuse optical measurements as biomarkers of brain injury risk 

Gregori Pla, Clara (Date of defense: 2019-03-06)

I have used and developed a practical new platform in the clinics for the noninvasive estimation of cerebral hemodynamics. The latform combines two diffuse optical techniques: near-infrared spectroscopy and diffuse ...

Demonstration of new experimental schemes for imaging and sensing: from quantum to classical and back 

Urrego González, Daniel Fernando (Date of defense: 2023-11-14)

(English) This Ph.D. thesis presents research in imaging and optical sensing, exploring novel concepts, and diverse applications. The experimental schemes put forward here are based on simulating specific aspects of quantum ...

Desarrollo y validación de una plataforma optofluídica ultrasensible para la detección especifíca y selectiva de mercadores tumorales en oncología 

Ortega. M, María A. (Date of defense: 2015-11-11)

Nowadays cancer is a devastating illness, so its early diagnosis could represent a powerful advantage in the struggle to eradicate it. The most recent technologies allowed the development of sensing platforms that led to ...

Detection of a single erbium ion in a nanoparticle 

Deshmukh, Chetan (Date of defense: 2022-04-29)

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 ...

Detection of particles, bacteria and viruses using consumer optoelectronic components 

Hussain, Rubaiya (Date of defense: 2022-07-01)

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 ...

Deterministic control of nanoantenna and single-photon emitter interaction at the nanoscale 

Palombo Blascetta, Nicola (Date of defense: 2021-03-24)

The study of light-matter interaction at the nanoscale is a very promising field of research, providing the possibility to manipulate the interaction with single quantum systems like single atoms, molecules, atomic defects ...

Development and application of localization-based microscopy methods to study the structure and dynamics of chromatin through the process of cellular differentiation 

Gómez García, Pablo (Date of defense: 2020-04-24)

Recent advancements in single-molecule localization-based microscopy have made it possible to visualize biological structures and dynamic processes within the cell with unprecedented spatial resolution. Determining the ...

Development and study of novel mid-infrared frequency conversion sources 

Nandy, Biplob Kumar (Date of defense: 2020-12-02)

Tunable narrow-linewidth and broadband laser sources in the mid-infrared (mid-IR) wavelength range are extremely desirable in all time scales for their several useful applications in spectroscopy, imaging, optical communication ...