Ara mostrant els elements 61-80 de 282

    Highly percolated ultra-thin metal films for reconfigurable metasurfaces 

    Martínez Cercós, Daniel (Data de defensa: 2023-06-21)

    (English) There is currently significant scientific and technological interest in ultrathin materials, with at least one dimension in the nm range or even smaller, since they possess features not achievable with their ...

    Single-atom motional dynamics in an optical dipole trap 

    Alves, Natália Domingues (Data de defensa: 2023-06-16)

    (English) This thesis studies, using simulation and experiment, the motional dynamics of a single atom in an optical dipole trap. The optical dipole trap we study is a single-beam, red-detuned, far-off-resonance trap (FORT). ...

    Generation of macroscopic spin singlets in cold atomic ensembles 

    Behbood, Naeimeh (Data de defensa: 2015-04-17)

    (English) This thesis describes the generation of macroscopic spin singlets in a cold atomic ensemble by performing quantum non-demolition measurement. Toward this goal we have implemented a realtime shot-nose limited ...

    Light-matter interaction with atomic ensembles 

    Dubost, Brice (Data de defensa: 2012-11-26)

    (English) The study of quantum light-matter interaction with atomic ensembles is an active research area. This kind of system allows fundamental studies on measurement in the context of continuous variables, in collective ...

    Optical parameter sensing: sensitivity limits and the advantages of using spatial modes of light 

    Villegas Juárez, Arturo (Data de defensa: 2023-04-26)

    (English) Resolution enhancement in modern optical metrology techniques has been possible due to significant technological improvements. The accurate and precise control of wavelength, bandwidth, and power of light sources; ...

    Optical holographic microscopy for bio- and nanoparticle characterization 

    Ortiz de Orruño Cuesta, Unai (Data de defensa: 2023-04-21)

    (English) Nowadays, being able to precisely characterize nanoparticles is of key relevance in a wide range of scenarios. For instance, chemical and pharmaceutical industries often rely in particle-sizing for quality control. ...

    Advanced single molecule fluorescent tools to reveal spatiotemporal multi-molecular interactions in living cells 

    Mateos Estévez, Nicolás (Data de defensa: 2023-04-28)

    (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 ...

    Nanophotonics with charged particles 

    Giulio, Valerio di (Data de defensa: 2023-04-12)

    (English) Among the fundamental constituents of matter, charged particles such electrons and positrons are leading protagonists in physical phenomena associated with small (~ meV) and high (~ MeV) energy scales. For example, ...

    Solution-processed quantum dot infrared lasers 

    Taghipour, Nima (Data de defensa: 2023-03-21)

    (English) Colloidal semiconductors quantum dots (CQDs) have emerged as a promising solutionprocessed gain material that can be engineered via low-cost and scalable chemical techniques. Owing to quantum confinement, their ...

    Attosecond soft X-ray absorption revealing the ultrafast non-adiabatic dynamics of furan 

    Severino, Stefano (Data de defensa: 2023-03-13)

    (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 ...

    Eco-friendly solar cells with cation-engineered AgBiS2 nanocrystals 

    Wang, Yongjie (Data de defensa: 2023-02-23)

    (English) Climate change and global energy demand urge the development of renewable energy sources for worldwide power supply. Photovoltaic devices that convert solar energy directly into electricity are the most promising, ...

    Environmentally-friendly perovskite nanocrystals based on titanium and tin 

    Liga, Shanti Maria (Data de defensa: 2023-03-22)

    (English) The availability of energy is a fundamental ingredient for the development of society. However, the intense consumption of fossil fuels as an energy resource since the second industrial revolution has caused a ...

    Fluorescence quantum yield and the open circuit voltage in perovskite solar cells 

    Kramarenko, Mariia (Data de defensa: 2023-03-24)

    (English) To mitigate the energy and climate crisis we are already facing and address the increasing energy consumption, it is essential to foster energy transition strategies. The energy transition success largely depends ...

    Towards efficient quantum repeater nodes based on solid-state quantum memories 

    Duranti, Stefano (Data de defensa: 2023-03-24)

    (English) Quantum repeaters are the foundation of future long-distance quantum networks. In most architectures, their functional core is constituted by quantum memories, which are devices that can store and re-emit photonic ...

    Multiple light scattering in atomic media : from metasurfaces to the ultimate refractive index 

    Andreoli, Francesco (Data de defensa: 2023-03-23)

    (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 

    Agarwal, Hitesh (Data de defensa: 2023-01-23)

    (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 

    Bareza, Nestor Jr. (Data de defensa: 2022-11-07)

    (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 

    Chisholm, Craig Sterling (Data de defensa: 2023-06-19)

    (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 

    Camphausen, Robin (Data de defensa: 2023-04-12)

    (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 

    Kottmann, Korbinian Gebhard (Data de defensa: 2022-10-14)

    (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 ...