Spin- & Photo Physics of prototypical Color Centers using Quantum embedding Methods

Description

Prototypical color centers in semiconductors, such as the NV-center in
diamond or vacancy-related defects in silicon carbide, were identified
as promissing candidates for the implementation of quantum
applications in semiconductors. Their coupled electron spins feature
correlated high/low-spin states that enable spin-selective
manipulation e.g. via photo excitation, magnetic fields or mechanics.
Advanced quantum embedding of a color center via a hamiltonian with an
effective screened Coulomb interaction and a solver based on
configuration interaction [1] has provided access to a quantitative
understanding of the involved physics and opens access to theory-based
qubit engineering. Our insight into the spin-selective optical cycle
and photon ionization of the silicon vacancy in silicon carbide [2]
demonstrates this.

[1] M. Bockstedte et. al., npj Quantum Materials 3, 31 (2018).
[2] T. Seidl et al., Nat. Commun. 16, 4669 (2025).

Period	26 Aug 2025
Event title	Psik 2025 Conference
Event type	Conference
Location	Lausanne, SwitzerlandShow on map
Degree of Recognition	International