Now showing items 233-246 of 246

    Ultracold atoms in artificial gauge fields 

    Grass, Tobias (Date of defense: 2013-04-23)

    The present thesis studies a variety of cold atomic systems in artificial gauge fields. In the first part we focus on fractional quantum Hall effects, asking whether interesting topological states can be realized with cold ...

    Ultracold atoms in optical lattices with long-range interactions and periodic driving 

    Tieleman, Olivier (Date of defense: 2013-03-08)

    This thesis contains theoretical research on ultracold quantum gases in spatially periodic potentials, featuring high-frequency periodic driving, long-range interactions, or both. The largest part features deep potentials ...

    Ultrafast carrier and structural dynamics in graphite detected via attosecond soft X-ray absorption spectroscopy 

    Di Palo, Nicola (Date of defense: 2020-03-26)

    Understanding most of the physical and chemical phenomena determining the world around us requires the possibility to interrogate their main characters on their natural scale in space and time. The insulating or conductive ...

    Ultrafast optical parametric oscillators : novel systems, techniques, and concepts 

    Badarla, Venkata Ramaiah (Date of defense: 2014-10-31)

    In this thesis, we have demonstrated various ultrafast optical parametric oscillators (OPOs) based on different nonlinear media. The thesis consists of OPO systems, novel techniques, designs, and concepts that has facilitated ...

    Ultrafast optoelectronics in 2D materials and their heterostructures 

    Massicotte, Mathieu (Date of defense: 2017-09-05)

    Understanding and improving how light is converted into electricity in materials is one of the central goals in the field of optoelectronics. This basic physical process lies at the heart of several major technologies, ...

    Ultrathin metal transparent electrodes for the optoelectronics industry 

    Ghosh, Dhriti Sundar (Date of defense: 2012-10-11)

    Transparent electrodes (TEs) are the essential elements of many optoelectronic devices such as solar cells, touch screens, organic LEDs, and LCDs. Consequently demand for TEs is growing very steeply and the market value ...

    Unravelling 3D cargo transport dynamics at the microtubule network with super-resolution microscopy 

    Verdeny Vilanova, Ione (Date of defense: 2016-10-13)

    Intracellular transport plays an essential role in a wide variety of fundamental cellular processes required to maintain the internal regulation and organization of cells. Different types of cargos such as organelles, ...

    Unravelling motor protein organization on lysosomal membranes with super-resolution microscopy 

    Cordier, Guillaume (Date of defense: 2018-04-03)

    This thesis first develops new methods for high-throughput and multi-color super-resolution microscopy (Chapters 2 and 3). Subsequently, I apply these methods to study the organization of motor proteins on the lysosome ...

    Versatile nonlinear frequency conversion sources in the near- and mid-infrared 

    Sukeert, Sukeert (Date of defense: 2022-03-11)

    Tunable laser sources in different spectral regions are of interest for a variety of applications including spectroscopy, trace gas sensing, medical diagnostics, LIDAR and material processing. Existing lasers have limited ...

    A versatile source of light-matter quantum states based on laser-cooled atoms 

    Farrera Soler, Pau (Date of defense: 2018-07-25)

    Quantum information is a fascinating field that studies situations in which information is encoded as quantum states. This encoding is affected by quantum physical effects (such as superposition or entanglement) and its ...

    Vibrations and energy transfer in molecules enhanced by single nanoantennas 

    Ockova, Jana (Date of defense: 2023-12-13)

    (English) Light is a powerful non invasive tool for probing matter down to its fundamental molecular properties. The past three decades saw advent of metallic nanoantennas engineered to concentrate light into sub diffraction ...

    Weak value amplification : new insights and applications 

    Salazar Serrano, Luis José (Date of defense: 2016-10-13)

    Weak Value Amplification (WVA) is a signal enhancement technique proposed in 1988 by Aharonov, Albert, and Vaidman that has been widely used to measure tiny changes that otherwise cannot be determined because of technical ...

    Whispering gallery microresonator for second harmonic light generation 

    Domínguez Juárez, Jorge Luís (Date of defense: 2014-07-22)

    In recent years, it has been proposed that circular microresonators may become an important element in the core of many photonic devices. The high Q-factors seen in fused silica micro-spheres and micro-toroids for light ...

    Witnessing non-Markovian evolutions 

    De Santis, Dario (Date of defense: 2021-06-22)

    The formulation of quantum physics stands among the most revolutionary theories of the twentieth century. During the first decades of this century, many phenomena concerning the microscopic world were unexplained or had ...