Now showing items 166-185 of 242

    Polaron physics in carbon nanotube electro-mechanical resonators 

    De Bonis, Sergio Lucio (Date of defense: 2020-02-06)

    Carbon nanotube (CNT) mechanical resonators are unique systems because they combine remarkable mechanical properties with rich charge transport characteristics. Thanks to their intrinsically low-dimensional nature, their ...

    Preclinical and clinical studies in oncology and endocrinology with diffuse light 

    Fernández Esteberena, Pablo Ricardo (Date of defense: 2023-09-27)

    (English) Near-infrared diffuse optical spectroscopy (DOS) techniques are capable of non-invasive measurement of microvascular hemodynamic parameters of deep tissues (>1 cm penetration). One important focus of the field ...

    Quantifying nanoscale carrier diffusion with ultrafast optical and photocurrent microscopy 

    Block, Alexander (Date of defense: 2019-09-06)

    Heat transport in solids is one of the oldest problems in physics, dating back to the earliest formulations of thermodynamics. The classical laws of heat conduction are valid as long as the observed time and length scales ...

    Quantifying randomness from Bell nonlocality 

    Bourdoncle, Boris (Date of defense: 2019-02-13)

    The twentieth century was marked by two scientific revolutions. On the one hand, quantum mechanics questioned our understanding of nature and physics. On the other hand, came the realisation that information could be treated ...

    Quantitative nanoscale imaging of synaptic protein organization 

    Laparra Cuervo, Lara (Date of defense: 2018-03-28)

    The arrival of super-resolution techniques has driven researchers to explore biological areas that were unreachable before. Such techniques not only allowed the improvement of spatial resolution in images but also the ...

    Quantum Brownian motion in Bose-Einstein condensates 

    Charalambous, Christos (Date of defense: 2020-01-31)

    Quantum Brownian motion is one of the most prominent examples of an open quantum system, a system which cannot be treated in isolation from its environment. The simplest method to study the dynamics of a system undergoing ...

    Quantum Brownian motion revisited : extensions and applications 

    Lampo, Aniello (Date of defense: 2018-10-02)

    Quantum Brownian motion represents a paradigmatic model of open quantum system, namely a system which cannot be treated as an isolated one, because of the unavoidable interaction with the surrounding environment. In this ...

    Quantum control of single spin excitations in cold atomic quantum memories 

    Albrecht, Boris (Date of defense: 2015-12-01)

    Optical quantum memories are important devices in quantum information science. In particular, they are building blocks of quantum repeater architectures that have been proposed to increase the range of quantum communication ...

    Quantum frecuency conversion for hybrid quantum networks 

    Maring, Nicolas (Date of defense: 2018-09-13)

    The ability to control the optical frequency of quantum state carriers (i.e. photons) is an important functionality for future quantum networks. It allows all matter quantum systems - nodes of the network - to be compatible ...

    Quantum gauge theory simulation with ultracold atoms 

    Zamora, Alejandro (Date of defense: 2014-12-15)

    The study of ultracold atoms constitutes one of the hottest areas of atomic, molecular, and optical physics and quantum optics. The experimental and theoretical achievements in the last three decades in the control and ...

    Quantum information outside quantum information 

    Pozas Kerstjens, Alejandro (Date of defense: 2019-10-15)

    Quantum theory, as counter-intuitive as a theory can get, has turned out to make predictions of the physical world that match observations so precisely that it has been described as the most accurate physical theory ever ...

    Quantum information with black boxes : lifting protocols from theory to implementation 

    Máttar Flores, Alejandro (Date of defense: 2017-10-17)

    According to recent estimates, 10^18 bytes of data are generated on a daily basis around the globe. Our information society urges for radical solutions to treat such data deluge. By exploiting fundamental key elements of ...

    Quantum light source compatible with solid-state quantum memories and telecom networks 

    Rieländer, Daniel (Date of defense: 2016-11-24)

    This PhD thesis is in the scope of experimental quantum communication. It deals with correlated photon pairs of which one photon is stored in a solid state device, while the other photon is at telecom wavelength. Quantum ...

    A quantum light-matter interface with Rydberg polaritons in a cold atomic ensemble 

    Distante, Emanuele (Date of defense: 2017-03-24)

    Nonlinear optics at the single-photon level enables deterministic photonphoton interaction, a long-standing goal in quantum photonics science. Besides its implication in fundamental aspects of physics, this would unlock ...

    Quantum liquid droplets in a mixture of Bose-Einstein condensates 

    Cabrera Córdova, César Raymundo (Date of defense: 2018-10-10)

    In this thesis, we report on the design and construction of a quantum simulator experiment using quantum gases in Spain. This experiment exploits mixtures of the three isotopes of potassium, which give access in an original ...

    Quantum many-body physics with ultracold atoms and molecules: exact dynamics and machine learning 

    Dawid Lekowska, Anna Maria (Date of defense: 2022-09-20)

    (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 ...

    Quantum measurements with cold atomic ensembles 

    Colangelo, Giorgio (Date of defense: 2016-12-16)

    This thesis describes quantum measurements of an ensemble of cold rubidium-87 atoms. We extend the covariance matrix formalism to spin-1 systems, including effects of decoherence, losses due to probing and atom number ...

    Quantum memory protocols for photonic solid-state devices 

    Kutluer, Kutlu (Date of defense: 2017-10-23)

    A photonic quantum memory (QM) is a device that has the capability of storing a quantum state of light and retrieving back after a controlled time. It is an important element in quantum information science and is, among ...

    Quantum metrology with high-density atomic vapors and squeezed states of light 

    Lucivero, Vito Giovanni (Date of defense: 2016-10-14)

    Nowadays there is a considerable progress in optical magnetometry and spin noise spectroscopy, which use magnetically-sensitive atomic ensembles and optical read-out, approaching the limits set by quantum mechanics. In ...

    Quantum multipartite entangled states, classical and quantum error correction 

    Raissi, Zahra (Date of defense: 2020-10-08)

    Studying entanglement is essential for our understanding of such diverse areas as high-energy physics, condensed matter physics, and quantum optics. Moreover, entanglement allows us to surpass classical physics and ...