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References (11)
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See Supplemental Material for details on double dot occupation, faster Rabi oscillations, nuclear field and fidelity estimates and individual addressing of the qubits -
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Nano Lett
- Publisher
- American Physical Society (APS)
- Copyright
- © 2013 American Physical Society
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.110.066806
- pmid
- 23432291
- Publisher site
- See Article on Publisher Site
Abstract
Because of the strong spin-orbit interaction in indium antimonide, orbital motion and spin are no longer separated. This enables fast manipulation of qubit states by means of microwave electric fields. We report Rabi oscillation frequencies exceeding 100 MHz for spin-orbit qubits in InSb nanowires. Individual <?format ?>qubits can be selectively addressed due to intrinsic differences in their g factors. Based on Ramsey fringe measurements, we extract a coherence time T 2 * = 8 ± 1 ns at a driving frequency of 18.65 GHz. Applying a Hahn echo sequence extends this coherence time to 34 ns.
Journal
Physical Review Letters – American Physical Society (APS)
Published: Feb 8, 2013