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2021-06-18
npj Quantum Information 7:99

Highly tunable magneto-optical response from magnesium-vacancy color centers in diamond

10.1038/s41534-021-00439-6

Defect quantum bits (qubits) constitute an important emerging technology. However, it is necessary to explore new types of defects to enable large-scale applications. In this article, we examine the potential of magnesium-vacancy (MgV) in diamond to operate as a qubit by computing the key electronic- and spin properties with robust theoretical methods. We find that the electronic structure of MgV permits the coexistence of two loosely separated spin-states, where both can emerge as a ground state and be interconverted depending on the temperature and external strain. These results demonstrate a route to control the magneto-optical response of a qubit by modulating the operational conditions.

Authors
Anton Pershin
Barcza Gergely
Örs Legeza
Ádám Gali
Research fields

Elementary building blocks of quantum information

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