Mitigating coherent leakage of superconducting qubits in a large-scale quantum socket

Understand

A practical quantum computer requires quantum bit (qubit) operations with low error rates in extensible architectures.

• We study a packaging method that makes it possible to address hundreds of superconducting qubits by means of three-dimensional wires: The large-scale quantum socket.
• A qubit chip is housed in a superconducting box, where both box and chip dimensions lead to unwanted modes that can interfere with qubit operations.
• We theoretically analyze these interference effects in the context of qubit coherent leakage.