Low-Error Operation of Spin Qubits with Superexchange Coupling
arXiv:1705.03702 · doi:10.1103/PhysRevB.96.201304
Abstract
In this theoretical work we investigate superexchange, as a means of indirect exchange interaction between two single electron spin qubits, each embedded in a single semiconductor quantum dot (QD). The exchange interaction is mediated by an intermediate, empty QD. Our findings suggest the existence of first order "super sweet spots", in which the qubit operations implemented by superexchange interaction are simultaneously insensitive to charge noise and errors due to spin-orbit interaction. We also find that the sign of the superexchange can be changed by varying the energy detunings between the QDs.
5 pages, 4 figures, supplementary Material after the references
References in corpus (4)
- Time-resolved Observation and Control of Superexchange Interactions with Ultracold Atoms in Optical Lattices
- Spin-Electric Coupling in Molecular Magnets
- Rashba and Dresselhaus Spin-Splittings in Semiconductor Quantum Wells Measured by Spin Photocurrents
- The asymmetric resonant exchange qubit under the influence of electrical noise