Tidsperiod: 2014-01-01 till 2017-12-31
Projektledare: Erik Sjöqvist
Budget: 3 000 000 SEK
The insight that quantum holonomies, i.e., non-Abelian geometric phases, have an inherent resilience to errors has opened up a path to overcome unwanted open system effects and parameter instabilities in quantum computers. This insight has triggered considerable efforts to develop holonomy based quantum computation (HQC) in many different physical systems. This project is part of an extensive collaboration with the Centre for Quantum Technologies, NUS, Singapore, on theoretical studies of HQC. Architectures for high-speed universal HQC are developed. We combine HQC with the coherence stabilization of noiseless subsystems. We develop finite-time realizations of adiabatic HQC based on time-optimal evolutions and superadiabatic states. Finally, we develop scalable schemes for HQC in topological insulators, NV centers in diamond, and atoms in optical lattices.