Now showing items 183-202 of 247
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
Padrón Brito, María Auxiliadora (Date of defense: 2021-04-08)
Photons are good candidates for carrying quantum information because they are very stable particles: they interact weakly with the medium and barely with each other. However, this has drawbacks when you want to process ...
Almeida, Jessica Oliveira de (Date of defense: 2022-07-28)
Quantum optics experiments are currently the most advanced techniques to under- stand, verify and simulate quantum phenomena. However, to access all the perfor- mance available in quantum states of light, one needs to ...
Abellán Sánchez, Carlos (Date of defense: 2018-06-19)
Randomness is one of the most intriguing, inspiring and debated topics in the history of the world. It appears every time we wonder about our existence, about the way we are, e.g. Do we have free will? Is evolution a result ...
Hauke, Philipp Hans-Jürgen (Date of defense: 2013-04-05)
Many outstanding problems in quantum physics, such as high-Tc superconductivity or quark confinement, are still - after decades of research - awaiting commonly accepted explanations. One reason is that such systems are ...
León Montiel, Roberto de Jesús (Date of defense: 2014-09-30)
For many years, the fields of quantum optics and biology have rarely shared a common path. In quantum optics, most of the concepts and techniques developed over the years stand for systems where only a few degrees of freedom ...
Camphausen, Robin (Date of defense: 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 ...
Chisholm, Craig Sterling (Date of defense: 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 ...
Hsieh, Chung Yun (Date of defense: 2022-10-10)
(English) As one of our most successful theories, quantum theory has greatly strengthened our understanding of nature and significantly advanced technologies. Specifically, quantum effects provide advantages in a broad ...
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, ...
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, ...
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 ...
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 ...
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 ...
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 ...