Qubit Zoo

Quantifying error and leakage in an encoded Si/SiGe triple-dot qubit

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Demonstrates leakage-resolved blind randomized benchmarking of an exchange-only qubit in isotopically enriched Si/SiGe.

Key Results

  • Average total error per unitary operation: 0.35%.
  • Leakage contribution: 0.17%, attributed primarily to substrate nuclear spins.
  • Uses only voltage-controlled exchange for qubit manipulation.

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