Now showing items 194-213 of 242

    Scalable techniques for graphene on glass 

    Marchena Martín-Francés, Miriam (Date of defense: 2018-06-14)

    The combination of unique properties -high electrical mobility, thermal conductivity, transparency and mechanical flexibility- make graphene promising for a wide variety of applications, including transparent electrodes, ...

    Self-cleaning optical surfaces for the inkjet and 3D printing industry 

    Noyan, Mehmet Alican (Date of defense: 2017-06-23)

    Liquid and solid repellent surfaces are key to many industries. For example, construction industry benefits from self-cleaning windows, cements, paints, roof tiles, and corrosion resistant surfaces, while easy-to-clean, ...

    Simulating a topological gauge theory in a Raman-dressed Bose-Einstein condensate 

    Frölian, Anika (Date of defense: 2022-04-24)

    Ultracold quantum gases constitute a powerful and versatile tool to experimentally explore quantum many-body physics. This thesis presents an original contribution to the quantum simulation of gauge theories with ultracold ...

    Simulating quantum measurements and quantum correlations 

    Guerini de Souza, Leonardo (Date of defense: 2018-01-29)

    This PhD thesis is focused on the quantum measurement simulability problem, that is, deciding whether a given measurement can be simulated when only a restricted subset of measurements is accessible. We provide an operational ...

    Simulation and bulk detection of topological phases of matter 

    Maffei, Maria (Date of defense: 2019-01-29)

    Differently from the majority of the other phases of matter, which are characterized by local order parameters, the topological phases are characterized by integer or semi-integer numbers, the topological invariants, which ...

    Single domain spinor Bose-Einstein condensate 

    Palacios Álvarez, Silvana (Date of defense: 2017-07-31)

    This work reports on the construction of a new-generation system capable to create single-mode spinor Bose-Einstein condensates of 87Rb, and non-destructively probe them using optical Faraday rotation. This system brings ...

    Single quantum emitter manipulation with 2D materials 

    Schädler, Kevin Gerd (Date of defense: 2018-05-22)

    Photonics aims to manipulate light by controlling its interactions with matter to enable novel optical technologies for communication, information processing and sensing. Current efforts strive to enter the regime of quantum ...

    Single-atom motional dynamics in an optical dipole trap 

    Alves, Natália Domingues (Date of defense: 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). ...

    Solid-state quantum memory for photonic qubits 

    Gündoğan, Mustafa (Date of defense: 2015-10-22)

    Optical quantum memories (QMs) are one of the fundamental building blocks in quantum information science (QIS). They might find important use in quantum communication and computation applications. Rare-earth ions (REIs) ...

    Soliton generation and control in engineered materials 

    Borovkova, Olga (Date of defense: 2013-10-11)

    Optical solitons provide unique opportunities for the control of light‐bylight. Today, the field of soliton formation in natural materials is mature, as the main properties of the possible soliton states are well understood. ...

    Solution-processed quantum dot infrared lasers 

    Taghipour, Nima (Date of defense: 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 ...

    Sources of photonic entanglement for applications in space 

    Steinlechner, Fabian (Date of defense: 2015-12-14)

    The nonlocal correlations of entangled systems are a feature inherent to quantum theory that is fundamentally at odds with our common-sense notions of realism and locality. Additionally, entanglement is an essential resource ...

    Spatiotemporal organisation of protein nanoclusters in adhesion complexes 

    Keary, Sarah (Date of defense: 2022-02-28)

    The main goal of this thesis was to contribute to the understanding of the nanoscale lateral organisation of key proteins in adhesion complexes. For this, we exploited single molecule localisation-based super-resolution ...

    Spectral evidence for a condensate of dark excitons in a trap 

    Beian, Mussie (Date of defense: 2016-06-22)

    Spatially indirect excitons, being composite bosons, are attractive candidates to explore correlated many-body systems. They possess an inherent large electric dipole, a four-fold spin manifold, and can be studied via the ...

    Spectral phase control of nanoscale nonlinear optical responses 

    Remesh, Vikas (Date of defense: 2020-06-08)

    The study of light-driven physical processes generated in nanomaterials require shorter (in time, or broader in frequency) laser pulses with techniques to tailor its phase and temporal/spectral characteristics at the ...

    Spectral response of individual molecules and nanoantennas with two-beam excitation 

    Gellings, Esther (Date of defense: 2020-02-21)

    At room temperature, individual molecules can be found in different conformations due to intrinsic and extrinsic factors which are reflected in spectral variability. When detecting single molecules, the ensemble average ...

    Spinor Bose-Einstein comagnetometer and interhyperfine interactions in 87Rb 

    Gómez Kabelka, Pau (Date of defense: 2021-09-28)

    In this work we demonstrate the first realization of a comagnetormeter in the ultracold regime. In comparison to regular magnetometers, which are designed to maximize their magnetic field sensitivity, a comagnetometer uses ...

    Spontaneous parametric down-conversion sources for generation of atom-resonant quantum light 

    Zielińska, Joanna Ada (Date of defense: 2018-03-19)

    This thesis studies different designs of optical parametric oscillators as sources of atom-resonant quantum light resonant with the rubidium D1 line.We analyze the mode structure and filtering techniques in a conventional ...

    Squeezed-ligh-enhanced magnetometry in a high density atomic vapor 

    Troullinou, Charikleia (Date of defense: 2022-09-29)

    (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 ...

    Statistical analysis and plasmonic effects to extend the use of Raman spectroscopy in biochemistry 

    Marro Sánchez, Mònica (Date of defense: 2013-07-12)

    Since its discovery in 1928, Raman spectroscopy (RS) has produced a revolution in the fields of analytical chemistry and molecular detection. Thanks to the latest technical advances, the expectations of the applicability ...