4 papers · 1 filter
Non-equilibrium Dynamics of Two-level Systems directly after Cryogenic Alternating Bias
V. Iaia, E. S. Joseph, S. Im +10
Two-level systems (TLSs) are tunneling states commonly found in amorphous materials that electrically couple to qubits, resonators, and vibrational modes in materials, leading to e…
Quasiparticle poisoning of superconducting qubits with active gamma irradiation
C. P. Larson, E. Yelton, K. Dodge +5
When a high-energy particle, such as a -ray or muon, impacts the substrate of a superconducting qubit chip, large numbers of electron-hole pairs and phonons are created. The ens…
Modeling phonon-mediated quasiparticle poisoning in superconducting qubit arrays
Eric Yelton, Clayton P. Larson, Vito Iaia +8
Correlated errors caused by ionizing radiation impacting superconducting qubit chips are problematic for quantum error correction. Such impacts generate quasiparticle (QP) excitati…
Quasiparticle Poisoning of Superconducting Qubits from Resonant Absorption of Pair-breaking Photons
Chuan-Hong Liu, David C. Harrison, Shravan Patel +8
The ideal superconductor provides a pristine environment for the delicate states of a quantum computer: because there is an energy gap to excitations, there are no spurious modes w…