Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Majorana fermions"”.
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Magic and Majorana Fermions in Quantum Computing, Topological Matter, and Dynamics
… explores the resource of “magic”, and the use of Majorana fermions, in quantum many-body physics and quantum computing. Along with other quantum resources, magic helps determine the advantage that a quantum circuit can display over classical computation. For the components of the quantum computer …
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Self-Consistent Study of Topological Superconductivity in Two-Dimensional Quasicrystals
… in a topological superconductor are zero-energy Majorana fermions. Majorana fermions are their own antiparticles and due to the non-Abelian exchange statistics that they obey, they open the door to new and powerful methods of topological quantum computing. Majorana fermions have been detected, …
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Strong correlations and topological order in one-dimensional systems
… setups and observables. The existence of end Majorana fermions in a 1D p-wave superconductor subject to periodic, incommensurate and disordered potentials is studied. The Tomonaga-Luttinger liquid (TLL), a model of interacting electrons in one spatial dimension, is considered in the context of …
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Deep Learning for the KamLAND-Zen Search for 0𝜈𝛽𝛽
… of 0𝜈𝛽𝛽 would demonstrate that neutrinos are Majorana fermions and that lepton number is not a symmetry of nature, thus providing a possible explanation for the observed matter-antimatter asymmetry of the universe. KamLAND-Zen is a leading search for 0𝜈𝛽𝛽, having placed the most stringent …
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Topological insulators and semimetals in the presence of interactions
… with s-wave superconductor is predicted to host Majorana fermions. To experimentally detect the Majorana fermions, the 3D TI should be thinner than the decay length of the proximity effect to have the fully superconducting TI surface. We study the superconducting proximity effect on the thin film …
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Identifying fake leptons in ATLAS while hunting SUSY in 8 TeV proton-proton collisions
… the analysis presented herein since gluinos are Majorana fermions; hence they can decay to produce like-charge leptons. The analysis considers several SUSY production topologies determined from a variety of simplified and phenomenological models. One of the core pieces of any ATLAS analysis is …
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Majorana qubits in non-Abelian topological superconductors
… with exotic quasiparticle excitations, namely Majorana fermions, which obey non-Abelian quantum statistics. They are exploited as hardware platforms for fault-tolerant topological quantum computing. In this thesis, we primarily study the non-topological decoherence ef- fects existing in …
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Topological Phases in Perovskite Iridates with Strong Spin-Orbit Coupling
… present in the system. Lastly, a pair of helical Majorana fermions emerges at the interface of a two-dimensional Weyl semimetal and a d-wave superconductor. We focused on the most promising and feasible realization: Iridium oxide layer without inversion symmetry, which is classified as Weyl …
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Studies in: entanglement entropy of two dimensional quasi-topological quantum field theory and geometry of the exact renormalization group and higher spin holography
… calculations are carried out for the case of Majorana fermions. Results and comments are presented for complex scalars. Additional details can be found in [1, 2].
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Rotational Symmetry and Phase Dynamics in Topological Superconductors
… tied to topological superconductors are Majorana bound states. These are neutral zero-energy quasiparticles, localised to boundaries or defects, that are highly sought after as ingredients for quantum computation. In the first part of this thesis, we consider two-dimensional crystalline …
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Investigation of magnetic interactions in topological insulators
… plasmon device and might be used to detect Majorana Fermions, an yet-to-be-confirmed particle as building block for quantum computation. Last but not least, combining the merits of high-Curie temperature of magnetic doping and the uniformity of magnetic proximity effect, we also report an …
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Higgs Effects in Neutrino Physics and Heavy Quark Systems
… dark matter in the loop consisting of singlet Majorana fermions within a model with A4 flavor symmetry. A relevant point of interest in the neutrino sector is the study of the nonstandered interactions and its implications to neutrino oscillation. Here, we introduce the nonstandard interaction …
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Angle-resolved photoemission and first-principles studies of topological semimetals and heterostructures
… are predicted to host exotic states such as Majorana fermions. By using a novel “flip-chip” preparation method, we cleaved these samples in situ to expose a clean surface for temperature and thickness dependent ARPES measurements. Utilizing the proximity effect, superconductive features were …
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Angle-resolved photoemission studies of topological thin films and superconducting heterostructures
… Hall effect, emergent phenomena such as Majorana fermions, supersymmetry, and skyrmions, and unconventional superconductivity. Many of these materials are thus highly suitable for applications in spintronics and fault-tolerant quantum computing. During this thesis research, high-quality, …
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The Interplay of Magnetism and Topology in Topological Insulators
… as the quantum anomalous Hall effect (QAHE) and Majorana fermions. The study and development of devices based on such phenomena are not only interesting from the perspective of fundamental physics, but also propose practical applications in spintronics and quantum computing. This thesis presents …
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Pair density wave superconducting states and statistical mechanics of dimers
… states. We show that in a system of spin-1/2 fermions in two dimensions in an electronic nematic spin-triplet phase where rotational symmetry is broken in both real and spin space PDW phases arise naturally in a theory that can be analysed using controlled approximations. We show that several …