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 352 for “"Spins"”.
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What Spins Away
What Spins Away is a novel about a man named Caleb who, in the process, of searching for a brother who has been missing for ten years, discovers that his inability to commit to a job or his primary relationships is both the result of his history with that older missing brother, and his own …
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Optical Control over Nuclear Spins
… is highly desirable. Particularly, nuclear spins have been considered as ideal quantum information carriers thanks to their exceptionally long coherence time exceeding minutes and even hours at room temperature. However, the application of nuclear spins is hindered by their small energy …
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SPINS : spectral phase interrogation using nonlinear spectra
A novel technique for ultrafast pulse measurement is presented. This technique involves only the measurement of the fundamental, second harmonic, and third harmonic (or other third-order nonlinear) spectra of an ultrafast pulse. An algorithm is employed to generate trial SHG and THG spectra based …
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Polarization of Nuclear Spins in Metallic Systems
Submitted by Jenny Wong-Welch (wongwel2@illinois.edu) on 2013-07-18T18:34:49Z No. of bitstreams: 1 1954_carver.pdf: 2859215 bytes, checksum: f2ea5922c31e8098016dcbc890096151 (MD5)
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Computational dynamics of classical nuclear spins in solids
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1990.
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Squeezing collective atomic spins with an optical resonator
This thesis describes two methods of overcoming the standard quantum limit of signal-to-noise ratio in atomic precision measurements. In both methods, the interaction between an ultracold atomic ensemble and an optical resonator serves to entangle the atoms and deform the uncertainty distribution …
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Spin Coupling in Radio Frequency Spectroscopy: A. The Electron Coupling of Nuclear Spins. B. The Coupling of Electron and Nuclear Spins
Made available in DSpace on 2014-12-05T19:37:06Z (GMT). No. of bitstreams: 1 5901997.pdf: 3898653 bytes, checksum: 503fc7d951ccaf5a8774d37fc47e4411 (MD5) Previous issue date: 1959
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Linking confined electron spins through coherent light-matter interaction.
Electron spins confined to self-assembled quantum dots are considered as nodes for a coherent optical network capable of supporting distributed quantum states. Through a series of experiments, the work contributing to this dissertation examines some of the key criteria for constructing such a …
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Measurements of fast dynamics of hole spins in silicon
… the technology of the 21st century. Single spins trapped in silicon quantum dots (QDs) have become an increasingly promising hardware platform for quantum computing due to their long coherence times, high-fidelity control and industry compatibility for scaling purposes. In particular, the …
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Terahertz-field-induced nonlinearity in phonons, electrons and spins
In this thesis, I describe work aimed at understanding nonlinear material responses initiated by strong terahertz (THz) field excitation. I discuss two aspects of nonlinear THz spectroscopy in condensed-matter materials: developments of experimental THz capabilities and spectroscopy methods and …
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Quantum Computation With Electron Spins of Phosphorous Donors in Silicon
… computer in which qubits are represented by the spins of electrons bound to phosphorous donors in silicon. Encoding each qubit in terms of three neighboring donor electron spins, we can realize universal quantum gate operations with only the Heisenberg exchange coupling J S1 •S2 between …
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Perturbation theory and spin temperature in the saturation of spins
… calculational technique must be employed. For spins, placed in a static magnetic field and subjected to a strong magnetic field oscillating at -a. fte~ency near - \ the resonant frequency, Redfiel~s theory of spin temperature in the rotating frame can be used to calculate the thermodynamic …
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Coherent control of dipolar coupled spins in large Hilbert spaces
… spin is coupled to a large number of surrounding spins. In this thesis, we primarily focus on developing coherent control techniques for such large spin systems. We start by experimentally simulating spin squeezing using a liquid-state NMR quantum information processor. We demonstrate that the …
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Quantum spins in semiconductor nanostructures: Hyperfine interactions and optical control
… between the electron and the surrounding nuclear spins and describe how its interplay with optical driving can lead to dynamic nuclear polarization. The second part of the dissertation follows a similar study in topological insulators: The role of time-reversal breaking magnetic impurities in …
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Ultrafast light-induced dynamics of spins and lattice in iron oxides
Contains fulltext : 75624.pdf (Publisher’s version ) (Open Access)
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Precision magnetometry and imaging via quantum manipulation of spins in diamond
… three experimental methods for controlling NV spins with various concentrations toward high-performance magnetic field sensing and imaging. First, the wide-field optical magnetic microscopy experiment provides ensemble- NV control via continuous-wave electron spin resonance and camera-based …
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Imaging and controlling atoms and semiconductor spins with advanced optical microscopy
… counterparts. Atoms and atom-like semiconductor spins are outstanding quantum objects in which such quantum technologies are implemented. In developing quantum systems, optical microscopy is central to controlling these quantum objects with their distinct atom-photon interactions, which enable …
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Scaling up a quantum register of dark electronic spins in diamond
… (NV) center in diamond have only included spins directly coupled to the NV. As this direct coupling is limited by the spin coherence time, it significantly restricts the register's maximum attainable size. To address this problem, this thesis presents a scalable approach to map out and …
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