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Dissertations / Theses on the topic 'Electrodynamical coupling'

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1

Dhanya, R. "Study of electrodynamical coupling of equatorial atmosphere-ionosphere system." Thesis, Indian Institute of Geomagnetism, Mumbai, 2012. http://localhost:8080/xmlui/handle/123456789/209.

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2

Leeder, Jamie M. "Novel nonlinear processes, higher-order molecular coupling and multiphoton interactions : a quantum electrodynamical formulation." Thesis, University of East Anglia, 2011. https://ueaeprints.uea.ac.uk/39141/.

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3

Flick, Johannes [Verfasser], Claudia [Gutachter] Draxl, Angel [Gutachter] Rubio, and Dieter [Gutachter] Bauer. "Exact nonadiabatic many-body dynamics : electron-phonon coupling in photoelectron spectroscopy and light-matter interactions in quantum electrodynamical density-functional theory / Johannes Flick. Gutachter: Claudia Draxl ; Angel Rubio ; Dieter Bauer." Berlin : Mathematisch-Naturwissenschaftliche Fakultät, 2016. http://d-nb.info/1112595929/34.

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4

Ho, Andy C. T. "Imaginary charge quantum electrodynamics : a running coupling analysis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0005/NQ34551.pdf.

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5

Rolland, Chloé. "Strong coupling Quantum electrodynamics of a voltage biased Josephson junction." Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10223/document.

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Dans cette thèse, nous avons étudié le couplage entre le transport de charge dans un conducteur quantique et le rayonnement émis dans son environnement électromagnétique. En effet, le caractère probabiliste du transport électrique dans ce type de conducteurs engendre des fluctuations de courant qui dissipent de l'énergie dans l'environnement sous forme de photons.Pour étudier cette interaction, nous avons utilisé un circuit dans lequel une Jonction Josephson couplée à un résonateur micro-onde est polarisée avec une tension continue. Quand la tension de polarisation atteint la condition pour la
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6

McNeill, Daniel Owen. "Strong coupling aspects of (2+1) dimensional gauge field theories." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244631.

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7

Begley, Stephen Patrick. "Optimisation of the coupling of ion strings to an optical cavity." Thesis, University of Sussex, 2016. http://sro.sussex.ac.uk/id/eprint/61884/.

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In this work, I detail the reconstruction and upgrades performed on the axial cavity ion trap in the ITCM group at the university of Sussex, and the measurement of the coupling of multiple ions to the cavity mode. This enables the optimal coupling between the ions and the cavity by adjusting the ions position in the radial and axial positions. This covers new ground in extending the optimal coupling beyond two ions which is of great importance for experiments with several ions in an optical cavity. The thesis outlines the background theory of light-matter interaction and cavity QED, before des
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8

Wilder, Frederick Durand. "The Non-Linear Electrodynamic Coupling Between the Solar Wind, Magnetosphere and Ionosphere." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/26586.

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The polar electric potential imposed on the ionosphere by coupling between the earthâ s magnetosphere and the solar wind has been shown to have a non-linear response to the interplanetary electric field (IEF). This dissertation presents an empirical study of this polar cap potential saturation phenomenon. First, the saturation of the reverse convection potential under northward is demonstrated using bin-averaged SuperDARN data. Then, the saturation reverse convection potential is shown to saturate at a higher value at higher solar wind plasma beta. The reverse convection flow velocity is then
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9

Musso, Andrea. "Losses in electrodynamic transient in superconducting Rutherford cables." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/12875/.

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The implementation of a continuum model for the simulation of interstrand coupling currents and the corresponding AC losses in superconducting Rutherford cables, due to electrodynamic transients, is performed. To obtain the necessary level of detail, the electrical model takes into account possible longitudinal variations of the contact conductance. A convergence study is performed to derive the minimum number of mesh elements required. The model is validated comparing loss values per cable twist pitch with the ones obtained through analytical formulae present in literature; an excellent agree
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10

Chervy, Thibault. "Strong coupling regime of cavity quantum electrodynamics and its consequences on molecules and materials." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAF033/document.

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Cette thèse présente une étude exploratoire de plusieurs aspects du couplage fort lumière-matière dans des matériaux moléculaires. Différentes propriétés héritées d’un tel couplage sont démontrées, ouvrant de nombreuses possibilités d’applications, allant du transfert d’énergie à la génération de signaux optiques non-linéaires et à l’élaboration de réseaux polaritoniques chiraux. Au travers des thématiques abordées, l’idée d’un couplage lumière-matière entrant en compétition avec les différentes fréquences de dissipation des molécules se révèle être cruciale. Ainsi, la prédominance du couplage
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11

Tracy, Brian David. "Lunar Tidal Effects in the Electrodynamics of the Low-Latitude Ionosphere." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1968.

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We used extensive measurements made by the Jicamarca Unattended Long-Term Investigations of the Ionosphere and Atmosphere (JULIA) and Incoherent Scatter Radar (ISR) systems at Jicamarca, Peru during geomagnetic quiet conditions to determine the climatologies of lunar tidal effects on equatorial vertical plasma drifts. We use, for the first time, the expectation maximization (EM) algorithm to derive the amplitudes and phases of the semimonthly and monthly lunar tidal perturbations. Our results indicate, as expected, lunar tidal effects can significantly modulate the equatorial plasma drifts. T
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12

Kumar, Sandeep. "Studies on equatorial and low latitude ionospheric electrodynamics and coupling processes during geomagnetically quiet and disturbed periods." Thesis, Indian Institute of Geomagnetism (IIG), 2016. http://localhost:8080/xmlui/handle/123456789/886.

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A thesis submitted to the University of Mumbai for the Ph.D.(Science) degree in physics under the guidance of Prof. B. Veenadhari<br>Conclusions : * There is a clear linear relationship between the ROCSAT-1 vertical E×B drifts and EEJ for both the sectors with a significant correlation coefficient. • The linear relationship between ROCSAT-1 measured E×B drifts and EEJ for Indian and Japanese sectors have been compared with Jicamarca Unattended Long-term Ionosphere At mosphere Radar (JULIA) radar (150 km echos) measured E×B drifts and EEJ strength form Peruvian sector. • It has been found t
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13

Dartiailh, Matthieu. "Cavity quantum electrodynamics with a single spin : coherent spin-photon coupling and ultra-sensitive detector for condensed matter." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEE035/document.

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Ce travail de thèse est centré autour de deux aspects des technologies quantiques: le calcul quantique et la mesure quantique. Il s'appuie sur la boîte à outils de la lumière micro-onde, développé en électrodynamique quantique, pour sonder des circuits mésoscopiques. Ces circuits, fabriqués ici à base de nanotubes de carbone, peuvent être conçus comme des bits quantiques ou comme des systèmes modèles de la matière condensée, et cette thèse explore les deux aspects. La réalisation d'une interface spin-photon cohérente illustre le premier. L'expérience repose sur l'utilisation de contacts ferro-
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14

Baust, Alexander Theodor [Verfasser], Rudolf [Akademischer Betreuer] Gross, and Jonathan J. [Akademischer Betreuer] Finley. "Tunable Coupling and Ultrastrong Interaction in Circuit Quantum Electrodynamics / Alexander Theodor Baust. Gutachter: Rudolf Gross ; Jonathan J. Finley. Betreuer: Rudolf Gross." München : Universitätsbibliothek der TU München, 2015. http://d-nb.info/1072758237/34.

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15

Baust, Alexander Theodor Verfasser], Rudolf [Akademischer Betreuer] [Gross, and Jonathan J. [Akademischer Betreuer] Finley. "Tunable Coupling and Ultrastrong Interaction in Circuit Quantum Electrodynamics / Alexander Theodor Baust. Gutachter: Rudolf Gross ; Jonathan J. Finley. Betreuer: Rudolf Gross." München : Universitätsbibliothek der TU München, 2015. http://nbn-resolving.de/urn:nbn:de:bvb:91-diss-20150611-1252065-1-0.

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16

Soykal, Öney Orhunç. "Coherent strong field interactions between a nanomagnet and a photonic cavity." Diss., University of Iowa, 2010. https://ir.uiowa.edu/etd/742.

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Strong coupling of light and matter is an essential element of cavity quantum electrodynamics (cavity-QED) and quantum optics, which may lead to novel mixed states of light and matter and to applications such as quantum computation. In the strong-coupling regime, where the coupling strength exceeds the dissipation, the light-matter interaction produces a characteristic vacuum Rabi splitting. Therefore, strong coupling can be utilized as an effective coherent interface between light and matter (in the form of electron charge, spin or superconducting Cooper pairs) to achieve components of quantu
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17

Cubaynes, Tino. "Shaping the spectrum of carbon nanotube quantum dots with superconductivity and ferromagnetism for mesoscopic quantum electrodynamics." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS195/document.

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Dans cette thèse, nous étudions des circuits de boîtes quantiques à base de nanotubes de carbone intégrés dans une cavité micro-onde. Cette architecture générale permet de sonder le circuit en utilisant simultanément des mesures de transport et des techniques propre au domaine de l’Electrodynamique quantique sur circuit. Les deux expériences réalisées durant cette thèse exploitent la capacité des métaux de contact à induire des corrélations de spins dans les boites quantiques. La première expérience est l’étude d’une lame s´séparatrice à paires de Cooper, initialement imaginée comme une source
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18

Mosqueiro, Thiago Schiavo. "Transições ópticas em heteroestruturas semicondutoras Zincblende com duas sub-bandas." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-20042011-154055/.

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Apresento neste trabalho uma derivação alternativa da hamiltoniana efetiva para um elétron na banda de condução de uma heteroestrutura semicondutora de rede Zincblende. Partindo do modelo de Kane 8 × 8 e da aproximação das funções envelope, esta hamiltoniana efetiva foi obtida com a linearização dos denominadores (dependentes das autoenergias) presentes na equação para a banda de condução, sob a hipótese de que o gap de energia seja muito maior que todas as demais diferenças de energia envolvidas (verdade para a maioria das estruturas Zincblende). A partir de um procedimento introduzido previa
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19

Reich, Felix Alexander [Verfasser], Wolfgang H. [Akademischer Betreuer] Müller, Wolfgang H. [Gutachter] Müller, and Ingo [Gutachter] Müller. "Coupling of continuum mechanics and electrodynamics : an investigation of electromagnetic force models by means of experiments and selected problems / Felix Alexander Reich ; Gutachter: Wolfgang H. Müller, Ingo Müller ; Betreuer: Wolfgang H. Müller." Berlin : Technische Universität Berlin, 2017. http://d-nb.info/1156178428/34.

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20

Da, silva Antonio. "Theoretical determination of optical properties for sapphire doped with titanium from its microscopy and analysis of its capabilities for laser without population inversion." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLX075/document.

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Cet exposé est scindé en deux grandes parties. Dans la première, nous estimons des constantes photo-physiques du saphir dopé au titane à partir d'un modèle analytique simple exploitant une théorie de Huang-Rhys pour la détermination du profil spectral des bandes simples et une hypothèse réaliste de superposition de ces dernières. Nous déterminons une formule pour l'indice de réfraction total du Ti:saphir en fonction de la concentration de dopant. Dans une seconde partie, nous évaluons, selon la vérification d'un concept, la capacité de laser sana inversion de populations pour un cristal dopé p
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21

Contamin, Lauriane. "Mise en évidence de textures de spin synthétiques par des mesures de transport et de champ microonde." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEE020.

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Dans cette thèse, nous avons étudié des nanocircuits à base de nanotubes de carbone intégrées dans une cavité micro-onde. Notre dispositif permet de réaliser simultanément des mesures de transport et des mesures micro-ondes, qui donnent des informations complémentaires sur le nanocircuit. Dans les deux expériences réalisées durant cette thèse, un nanotube de carbone est placé au-dessus d’un matériau magnétique qui présente plusieurs domaines d’aimantation. L’axe du champ magnétique de fuite résultant oscille le long du nanotube. Pour les électrons confinés, il est équivalent à un couplage spin
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22

Mondal, Ritwik. "Relativistic theory of laser-induced magnetization dynamics." Doctoral thesis, Uppsala universitet, Materialteori, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-315247.

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Ultrafast dynamical processes in magnetic systems have become the subject of intense research during the last two decades, initiated by the pioneering discovery of femtosecond laser-induced demagnetization in nickel. In this thesis, we develop theory for fast and ultrafast magnetization dynamics. In particular, we build relativistic theory to explain the magnetization dynamics observed at short timescales in pump-probe magneto-optical experiments and compute from first-principles the coherent laser-induced magnetization. In the developed relativistic theory, we start from the fundamental Dirac
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23

Flottat, Thibaut. "Bosons couplés à des spins 1/2 sur réseau." Thesis, Université Côte d'Azur (ComUE), 2016. http://www.theses.fr/2016AZUR4080/document.

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Les systèmes fortement corrélés, pouvant adopter des phases surprenantes de la matière, émergent dans le domaine des atomes ultra-froids ou dans celui de l’électrodynamique quantique en cavité (CQED). Ceux-ci sont au centre d’intenses travaux expérimentaux et théoriques. Dans cette thèse, nous présentons une étude de deux modèles de bosons avec deux ou zéro états internes. Ceux-ci peuvent se déplacer sur un réseau, et sont localement couplés avec des spins 1/2. Notre intérêt réside dans la détermination du diagramme de phase de l’état fondamental de ces systèmes ainsi que de l’étude des propri
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24

Caprez, Adam Preston. "Tests of the Aharonov-Bohm effect." 2009. http://proquest.umi.com/pqdweb?did=1694329131&sid=4&Fmt=2&clientId=14215&RQT=309&VName=PQD.

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Thesis (Ph.D.)--University of Nebraska-Lincoln, 2009.<br>Title from title screen (site viewed June 26, 2009). PDF text: x, 153 p. : ill. (some col.) ; 9 Mb. UMI publication number: AAT 3350442. Includes bibliographical references. Also available in microfilm and microfiche formats.
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25

Travis, Kort Alan. "Optical scattering from nanoparticle aggregates." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-12-2247.

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Nanometer-scale particles of the noble metals have been used for decades as contrast enhancement agents in electron microscopy. Over the past several years it has been demonstrated that these particles also function as excellent contrast agents for optical imaging techniques. The resonant optical scattering they exhibit enables scattering cross sections that may be many orders of magnitude greater than the analogous efficiency factor for fluorescent dye molecules. Biologically relevant labeling with nanoparticles generally results in aggregates containing a few to several tens of particles.
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