Search for dissertations about: "Ground-state cooling"
Showing result 1 - 5 of 7 swedish dissertations containing the words Ground-state cooling.
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1. Electronic Control of Flexural Nanowire Vibrations
Abstract : “Nanoelectromechanical systems” (NEMS) are nanometer-sized mechanical structures coupled to electronic devices of comparable size. The coupling between mechanical and electronic degrees of freedom, combined with their mesoscopic size, provide these systemswith some unique properties that make them interesting from both the fundamental and technological point of view. READ MORE
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2. Mesoscopic phenomena in the electromechanics of suspended nanowires
Abstract : Over the last two decades nanotechnology has been a very active field of scientific research, both from fundamental perspectives as well as for applications in technology and consumer goods. In this thesis, theoretical work on quantum mechanical effects on charge transport in nanoelectromechanical systems is presented. READ MORE
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3. Electromechanical Phenomena in Superconducting and Normal Nanostructures
Abstract : This thesis summarizes a series of theoretical studies on the electromechanical properties of nanostructures made of superconducting and/or metallic elements. The first part of the work is devoted to the analysis of the interactions between the electronic and mechanical degrees of freedom in suspended nanowires. READ MORE
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4. Cooling of a Suspended Nanowire by an ac Josephson current
Abstract : Nanoelectromechanical systems have been used for the exploration of the quantum limit of mechanical motion. There is hope that the quest for the quantum regime of these systems will shed light on fundamental questions in physics and lead to new quantum technologies. READ MORE
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5. Ultrafast Dynamics in Ground and Excited States of Porphyrin Molecules
Abstract : This thesis describes inter and intramolecular dynamics in porphyrin molecules. To create a basis for understanding the energy and electron transfer processes in photosynthesis, the ultrafast dynamics of monomeric chlorophyll a, chlorophyll b and bacteriochlorophyll a were studied with ultrashort laser pulses. READ MORE