Quantum Dots for Quantum Information Processing: Controlling and Exploiting the Quantum Dot Environment

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.

Nominated as an outstanding PhD thesis by the Ludwig Maximilian University of Munich, Germany Offers a comprehensive introduction to surface acoustic waves in the quantum regime Exploits the coupling between quantum dots and adjacent nuclear spins to enhance the potential for quantum information processing

Autorentext
Martin Schuetz studied both Industrial Engineering and Physics at the Karlsruhe Institute for Technology, Michigan State University and ETH Zurich. He obtained a PhD in Physics in the group of Ignacio Cirac at the Max-Planck-Institute for Quantum Optics, where he is currently working as a postdoc.

Inhalt
Introduction.- Superradiance-Like Electron Transport Through a Quantum Dot.- Nuclear Spin Dynamics in Double Quantum Dots.- Universal Quantum Transducers Based on Surface Acoustic Waves.- Outlook.