Coherent spin control by electrical manipulation of the magnetic anisotropy

TL;DR

This paper demonstrates electrical control of spin states in manganese defects in zinc oxide by tuning magnetic anisotropy with electric fields, enabling coherent spin manipulation for quantum applications.

Contribution

It introduces a method to electrically manipulate magnetic anisotropy in manganese-doped zinc oxide, allowing coherent spin control and electric-driven spin transitions.

Findings

Phase coherence times of about one millisecond at low temperatures.

Electric fields can tune the anisotropy energy of manganese defects.

Electrical control enables resonant microwave electric spin transitions.

Abstract

High-spin paramagnetic manganese defects in polar piezoelectric zinc oxide exhibit a simple almost axial anisotropy and phase coherence times of the order of a millisecond at low temperatures. The anisotropy energy is tunable using an externally applied electric field. This can be used to control electrically the phase of spin superpositions and to drive spin transitions with resonant microwave electric fields.