From the 12th to 17th of June 2022, the conference on defects in solids for quantum technologies was held in Stockholm, Sweden, at the AlbaNova University Center of Stockholm University. The final scientific program of the conference lasted for five full days, included 34 invited talks, 48 contributed talks, and a poster session with 30 posters, all-in-all having 119 participants from 21 countries. The event was sponsored jointly by the Psi-k organization and CECAM, and partly funded by the organizing universities of Linköping University and Stockholm University with funds from the Knut and Alice Wallenberg Foundation.
The conference covered the state-of-the-art advances in the study of defects in semiconductors and the quantum properties they exhibit which are favorable for applications in future information, communication, and sensing technology. Considerable effort has been spent to develop a basic unit of quantum information processing (or qubit) from different individual quantum systems, such as single atoms or ions trapped in a crystal lattice, single Josephson superconducting devices, single photons emitted from quantum dots or single photons/spins associated with point defects in semiconductors. Quantum states due to point defect in wide band gap semiconductors may realize single photon sources and quantum bits that can be harnessed in quantum information processing and nanoscale sensor applications at room temperature. The leading contender is the nitrogen-vacancy center in diamond that may be considered as a robust quantum bit. However, the possibility to realize bright single-photon emitters and single spin sources (single defects with spin) in SiC, Si, and hBN have been demonstrated. Researchers face many materials science challenges in fabricating point defect quantum states with favorable intrinsic properties that can be perturbed by other defects either in bulk or at the surface of the devices. First principles theoretical simulations have been demonstrated as an essential tool in understanding the underlying physics of these atomic scale systems as well as in identification of potential new quantum bits and single photon emitters in wide band gap semiconductors. Therefore, tight collaboration of experimental research and atomistic simulations is essential for a rapid progress in the field. Continue reading Conference on Defects in Solids for Quantum Technologies (DSQT2022)