4 papers · 1 filter
Statistics of Strongly Coupled Defects in Superconducting Qubits
S. Weeden, D. C. Harrison, S. Patel +8
Decoherence in superconducting qubits is dominated by defects that reside at amorphous interfaces. Interaction with discrete defects results in dropouts that complicate qubit opera…
Correlated quasiparticle poisoning from phonon-only events in superconducting qubits
E. Yelton, C. P. Larson, K. Dodge +2
Throughout multiple cooldowns we observe a power-law reduction in time for the rate of multi-qubit correlated poisoning events, while the rate of shifts in qubit offset-charge rema…
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 en…
Synthetic high angular momentum spin dynamics in a microwave oscillator
Saswata Roy, Alen Senanian, Christopher S. Wang +10
Spins and oscillators are foundational to much of physics and applied sciences. For quantum information, a spin 1/2 exemplifies the most basic unit, a qubit. High angular momentum…