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 20 of 39 for “"Single spin"”.
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Transverse single-spin asymmetries in pion-induced Drell-Yan and J/Psi production at COMPASS
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Measurement of target single-spin asymmetry in charged kaon electroproduction on a transversely polarized 3He target
The subject of quark transverse spin and transverse momentum distribution are two current research frontier in understanding the spin structure of the nucleons. The goal of the research reported in this dissertation is to extract new information on the quark transversity distribution and the novel …
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Measurement of transverse single-spin asymmetries in π0 and η Meson production in √s = 200 GEV p↑ + p collisions with sPHENIX
… describes the extraction of transverse single-spin asymmetries in inclusive production of π0 and η mesons decaying into two photons. Such observables are sensitive to multi-parton correlations in the proton, which are related to transverse-momentum dependent (TMD) effects. The new …
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W boson cross sections and single spin asymmetries in polarized proton-proton collisions at [square root of] s =500 GeV at STAR
… This has offered a first look at the spin-dependent production of W+(-) bosons, and hence at the spin-flavor structure of the proton, where the main production mode is through d+u (u+d) annihilation. Using STAR's large Time Projection Chamber and its wide-acceptance electromagnetic …
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Studying the Quark Structure of the Proton in High Energy Proton-Proton Collisions at RHIC
This thesis presents the first measurement of single spin asymmetries from inclusive di-hadron production in polarized proton-proton collisions at Relativistic Heavy Ion Collider. This measurement combines the transversity distribution function and a polarized di-hadron fragmentation function, …
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Parity-Violating Elastic Electron Nucleon Scattering: Measurement of the Strange Quark Content of the Nucleon and Towards a Measurement of the Weak Charge of the Proton
… to measure the parity-conserving beam normal single spin asymmetries that provide a measurement of the imaginary part of two photon exchange. The measurement of this asymmetry is necessary to understand the systematic contribution to measurements of parity-violating asymmetries, but it is also …
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Molecular color centers
… such systems generally lack ground state spins capable of non-thermal initialization and single spin readout, hindering their integration with existing quantum technologies. To overcome this shortcoming, we developed general design principles to develop transition metal-based molecular …
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Strong coupling between microwave photons and nanomagnet magnons
… bulky ferromagnetic insulators with large spin numbers are utilized, which limit their potential applications for scalable quantum information processing. In this thesis, by enhancing single spin coupling strength using lithographically defined superconducting resonators, we demonstrate …
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Precise control of quantum information
… how quantum information stored in a nuclear spin system can be controlled accurately. We describe a method creating strongly-modulating single-spin gates that faithfully produce the desired unitary transformations. The simulated fidelity of the best gate (under ideal conditions) reaches close …
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High-fidelity microwave control of single-atom spin qubits in silicon
… demonstration of the full operation of single-spin qubits in Si. Our qubits consist of the electron and nuclear spins of a single phosphorus atom, implanted in a Si substrate, and controlled by a gated nanostructure. We describe an experimental setup tailored to minimise electron …
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Spin Dependence in Polarized Proton-Proton Elastic Scattering at RHIC
… with the unique capability of RHIC to collide spin-polarized proton beams, allows STAR to study both the dynamics and the spin-dependence of the proton-proton (<em> pp</em>) elastic scattering process. Silicon strip detectors, installed inside the Roman Pots, measure tracks of protons scattered …
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Coherent Interaction Between Laser Photons and Single Spins in InAs Quantum Dots
… coherent interactions between laser photons and single spins in two types of InAs quantum dots. Quantum dots are promising candidates for quantum information applications due the potential for on-demand emission of highly pure and indistinguishable photons. Achieving coherent interactions between …
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Quantum assisted sensing, simulation and control
… measurement of rotations, magnetic fields, and single spins towards the reconstruction of single-molecule structures. We also develop new methods that aid these tasks. For instance, we demonstrate how versatile quantum control of spin systems can be achieved via Hamiltonian engineering based on …
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Environmental coupling in a quantum dot as a resource for quantum optics and spin control
A single spin confined to a semiconductor quantum dot is a system of significant interest for quantum information science, as a potential optically-addressable qubit. In many respects, a quantum dot behaves like a single atom with high quality single photon emission. By controlling the light-matter …
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Transition from integrable to chaotic domain in spectra of spin chains
… integrable-chaotic transition in the Heisenberg spin model. We consider three ways to break the integrability: presence on an external field on a single spin, coupling of an external random field with each spin in the chain and next nearest neighbor interaction between spins. We propose a …
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The proton's longitudinal spin structure studied through the weak interaction in pp collisions
… years there has been limited knowledge of the spin structure of the proton. The degree to which the antiquarks and gluons of radiative origin inside the proton contribute to the total spin is particularly not well confined. The PHENIX experiment at RHIC has made measurements that have, and …
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Nanoscale engineering of spin-based quantum devices in diamond
… requires engineering and control at the level of single quanta. In this thesis, we explore the engineering of a particular quantum system: optically active defects in diamond, known as color centers. Color centers have a variety of advantageous characteristics, including long-lived quantum phase …
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Quantum sensing and simulation with solid-state defects
Solid-state spin defects have garnered significant interest in recent years due to their potential for various quantum applications, ranging from sensing, simulation to communications. Despite the fast progress of the field in the past decades, numerous challenges remain before these applications …
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Probing two-dimensional magnetic phenomena with diamond quantum microscopy
… Diamond Quantum Microscopy (DQM), based on a single-spin defect in diamond, has recently emerged as promising tool for advanced magnetic imaging. The unprecedented magnetic sensitivity in combination with the nanometre-scale resolution offers new possibilities for exploring fundamental physics …
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