Regensburg 2022 – wissenschaftliches Programm

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QI: Fachverband Quanteninformation

QI 8: Quantum Sensors and Metrology

QI 8.3: Vortrag

Mittwoch, 7. September 2022, 15:45–16:00, H9

Defects in semi-conductors for Quantum Applications — •SAJID ALI, Fabian Bertoldo, Simone Manti, and Kristian Thygesen — CAMD, Computational Atomic-Scale Materials Design, Department of Physics, Technical University of Denmark, 2800 Kgs. Lyngby Denmark

Discovery of single photon emission (SPE) from 2D materials has opened a new arena of research because of the unique electric, magnetic and optical properties possessed by these SPE*s systems. Based on these superiror properties, such systems provide very attractive platform that can help to realize, control, manipulate and measure individual quantum states. The defect systems with similar properties must be explored in other 2D materials, as this will broaden the range of materials available for such applications, consequently revolutionising this field. In the present work we have shortlisted/ the defect systems with optimal properties for various quantum applications e.g. qubits, quantum key distribution, brain magnetometers etc., based on our screening study of intrinsic point defects in dynamically and thermodynamically stable and non-magnetic host systems from C2DB database . We study various aspects and properties of these defect systems e.g. photoluminescence (PL) line shape, Transition dipole moment, Radiative recombination rates, Inter-system crossing rates, Hyperfine coupling parameters, Zero field splitting, Spin-Coherence times etc. We identify a set of defect systems, with ideal properties, which can be exploited for various quantum technologies.