All-electric qubit control in heavy hole quantum dots via non-Abelian geometric phases | |
Article | |
关键词: COHERENT CONTROL; GAUGE STRUCTURE; FERMI SYSTEMS; SPIN; COMPUTATION; HOLONOMY; WELLS; | |
DOI : 10.1103/PhysRevB.85.205425 | |
来源: SCIE |
【 摘 要 】
We demonstrate how non-Abelian geometric phases can be used to universally process a spin qubit in heavy hole quantum dots in the absence of magnetic fields. A time-dependent electric quadrupole field is used to perform any desired single-qubit operation by virtue of non-Abelian holonomy. During the proposed operations, the degeneracy of the time-dependent two-level system representing the qubit is not split. Since time-reversal symmetry is preserved and hyperfine coupling is known to be weak in spin qubits based on heavy holes, we expect very long coherence times in the proposed setup.
【 授权许可】
Free