Electric field manipulation enhanced by strong spin-orbit coupling: promoting rare-earth ions as qubits.

ABSTRACT: Quantum information processing based on magnetic ions has potential for applications as the ions can be modified in their electronic properties and assembled by a variety of chemical methods. For these systems to achieve individual spin addressability and high energy efficiency, we exploited the electric field as a tool to manipulate the quantum behaviours of the rare-earth ion which has strong spin-orbit coupling. A Ce:YAG single crystal was employed with considerations to the dynamics and the symmetry requirements. The Stark effect of the Ce³⁺ ion was observed and measured. When demonstrated as a quantum phase gate, the electric field manipulation exhibited high efficiency which allowed up to 57 π/2 operations before decoherence with optimized field direction. It was also util

SUBMITTER: Liu Z 

PROVIDER: S-EPMC8288692 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature