Passive stabilization of a hole spin qubit using the optical Stark effect

  title={Passive stabilization of a hole spin qubit using the optical Stark effect},
  author={Andrew J. Ramsay},
  journal={Physical Review B},
  • A. Ramsay
  • Published 1 October 2015
  • Physics
  • Physical Review B
The extrinsic dephasing of a hole spin confined to a self-assembled quantum dot is dominated by charge noise acting on an electric-field dependent g-factor. Here we propose the use of the optical Stark effect to reduce the sensitivity of the effective hole Zeeman energy to fluctuations in the local electric-field. Calculations using measured quantum dot parameters are presented, and demonstrate a factor of 10-100 reduction in the extrinsic dephasing. Compared to active stabilization methods… Expand

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