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This thesis offers a comprehensive introduction to surface acoustic waves in the quantum regime. It addresses two of the most significant technological challenges in developing a scalable quantum information processor based on spins in quantum dots: (i) decoherence of the electronic spin qubit due to the surrounding nuclear spin bath, and (ii) long-range spin-spin coupling between remote qubits. Electron spins confined in quantum dots (QDs) are among the leading contenders for implementing quantum information processing. To this end, the author pursues novel strategies that turn the unavoidable coupling to the solid-state environment (in particular, nuclear spins and phonons) into a valuable asset rather than a liability.

Nanoscale science. --- Interfaces (Physical sciences). --- Thin films. --- Spintronics. --- Quantum Information Technology, Spintronics. --- Surface and Interface Science, Thin Films. --- Nanoscale Science and Technology. --- Computation, Quantum --- Computing, Quantum --- Information processing, Quantum --- Quantum computation --- Quantum information processing --- Physics. --- Nanoscience. --- Nanostructures. --- Surfaces (Physics). --- Quantum computers. --- Nanotechnology. --- Quantum dots. --- Quantum computing. --- Electronic data processing --- Dots, Quantum --- Semiconductor quantum dots --- Quantum electronics --- Semiconductors --- Molecular technology --- Nanoscale technology --- High technology --- Nanoscience --- Physics --- Nano science --- Nanoscale science --- Nanosciences --- Science --- Films, Thin --- Solid film --- Solid state electronics --- Solids --- Surfaces (Technology) --- Coatings --- Thick films --- Surface chemistry --- Surfaces (Physics) --- Fluxtronics --- Magnetoelectronics --- Spin electronics --- Spinelectronics --- Microelectronics --- Nanotechnology --- Computers