Calibrating majorana qubits by probing topological degeneracy

A topological quantum computing device comprising:

• a qubit architecture including a plurality of Majorana zero modes (MZMs);
• and
• a qubit controller configured to:
• set a plurality of device parameters for the qubit architecture;
• calibrate the plurality of device parameters at least in part by:
• determining whether the plurality of MZMs exhibit ground state degeneracy;
• and
• modifying one or more device parameters of the plurality of device parameters when the plurality of MZMs are determined to not exhibit ground state degeneracy;
• and
• modify one or more measurement device parameters of a measurement device coupled to the qubit architecture when the plurality of MZMs are determined to exhibit ground state degeneracy.

A topological quantum computing device comprising:

• a qubit architecture including a plurality of Majorana zero modes (MZMs);
• and
• a qubit controller configured to:
• connect a superconductor included in the qubit architecture to ground via a junction;
• perform one or more zero bias peak measurements at the qubit architecture;
• set a plurality of device parameters for the qubit architecture based at least in part on the one or more zero bias peak measurements;
• disconnect the superconductor from ground;
• calibrate the plurality of device parameters at least in part by:
• determining whether the plurality of MZMs exhibit ground state degeneracy;
• and
• modifying one or more device parameters of the plurality of device parameters when the plurality of MZMs are determined to not exhibit ground state degeneracy;
• and
• modify one or more measurement device parameters of a measurement device coupled to the qubit architecture when the plurality of MZMs are determined to exhibit ground state degeneracy.