Fast spin-orbit qubit in an indium antimonide nanowire

J. W G Van Den Berg; S. Nadj-Perge; V. S. Pribiag; S. R. Plissard; E. P A M Bakkers; S. M. Frolov; L. P. Kouwenhoven

doi:10.1103/PhysRevLett.110.066806

Fast spin-orbit qubit in an indium antimonide nanowire

J. W G Van Den Berg, S. Nadj-Perge, V. S. Pribiag, S. R. Plissard, E. P A M Bakkers, S. M. Frolov, L. P. Kouwenhoven

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

140 Scopus citations

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 qubits can be selectively addressed due to intrinsic differences in their g factors. Based on Ramsey fringe measurements, we extract a coherence time T2*=8±1 ns at a driving frequency of 18.65 GHz. Applying a Hahn echo sequence extends this coherence time to 34 ns.

Original language	English (US)
Article number	066806
Journal	Physical review letters
Volume	110
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.110.066806
State	Published - Feb 8 2013

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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 qubits can be selectively addressed due to intrinsic differences in their g factors. Based on Ramsey fringe measurements, we extract a coherence time T2*=8±1 ns at a driving frequency of 18.65 GHz. Applying a Hahn echo sequence extends this coherence time to 34 ns.",

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AU - Frolov, S. M.

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AB - 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 qubits can be selectively addressed due to intrinsic differences in their g factors. Based on Ramsey fringe measurements, we extract a coherence time T2*=8±1 ns at a driving frequency of 18.65 GHz. Applying a Hahn echo sequence extends this coherence time to 34 ns.

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Fast spin-orbit qubit in an indium antimonide nanowire

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