13 papers
Native defects and erbium impurities in CaWO4
Minseok Choi, Mark E. Turiansky, BaiQing Zhao +2
We perform hybrid density functional calculation to study the energetics, electronic properties, optical transitions, and migration barriers of native defects in CaWO. Oxygen a…
Charge dynamics at nitrogen impurities and nitrogen-vacancy centers in diamond
Chandan Kumar Vishwakarma, J. K. Nangoi, Mark E. Turiansky +1
The nitrogen-vacancy (NV) center in diamond is the prototype quantum defect that enables a variety of diamond-based quantum technologies. However, charge-state instability and spec…
High-Performance Near-Infrared Quantum Emission from Color Centers in hBN
Sean Doan, Sahil D. Patel, Yilin Chen +9
Color centers hosted in hexagonal boron nitride have emerged as a highly promising platform for single-photon emission and spin-photon technologies relevant to quantum communicatio…
Impact of Absorption due to Zero-Field Splitting on Loss in Dielectrics: A Case Study in Sapphire
Mark E. Turiansky, Chris G. Van de Walle
The coherence times of superconducting qubits are limited by loss mechanisms, whose microscopic origins have remained elusive. We propose a mechanism caused by transitions between…
A defect in diamond with millisecond-scale spin relaxation time at room temperature
Sounak Mukherjee, Anran Li, Johannes Eberle +16
Spin defects in diamond are promising platforms for quantum sensing. The longest electron spin relaxation times () at room temperature for solid-state defects are observed in…
Resonant states and nuclear dynamics in solid-state systems: the case of silicon-hydrogen bond dissociation
Woncheol Lee, Mark E. Turiansky, Dominic Waldhör +3
Bond breaking in the presence of highly energetic carriers is central to many important phenomena in physics and chemistry, including radiation damage, hot-carrier degradation, act…