Andrea Maiani

Feb 10, 2025 | link.aps.org | William Strickland |Bassel Heiba Elfeky |Lukas Baker |Andrea Maiani

Fluxonium qubits are a promising alternative to the conventional transmon for quantum computation using superconducting circuits. The two lowest-energy wave functions are localized, distinct wells in phase space, leading to a suppressed transition-matrix element and longer bit-flip times. There also exists a magnetic flux “sweet spot,” where the qubit frequency is first-order insensitive to flux noise. However, the exact qubit characteristics depend on the exact circuit parameters.

Feb 10, 2025 | journals.aps.org | William Strickland |Bassel Heiba Elfeky |Lukas Baker |Andrea Maiani

Fluxonium qubits are a promising alternative to the conventional transmon for quantum computation using superconducting circuits. The two lowest-energy wave functions are localized, distinct wells in phase space, leading to a suppressed transition-matrix element and longer bit-flip times. There also exists a magnetic flux “sweet spot,” where the qubit frequency is first-order insensitive to flux noise. However, the exact qubit characteristics depend on the exact circuit parameters.