Qubit Zoo

State Tomography of Capacitively Shunted Phase Qubits with High Fidelity

1 min read

This paper introduced the capacitively shunted phase-qubit design, separating the shunt capacitor from the tunnel junction to reduce strongly coupled two-level defects.

Key Results

  • Reduced the density of coupled two-level systems by roughly an order of magnitude
  • Improved destructive single-shot measurement fidelity to about 90%
  • Demonstrated single-shot quantum state tomography

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