Sub-MHz SWAP spectroscopy of two-level systems in superconducting qubits

arXiv:2610.11125 · quant-ph · Submitted 2026-10-08 · Read on arXiv

quant-ph

Submitted: 2026-10-08

Updated: 2026-10-08

Terminology

• Trace — 9× in this paper · explained in 2 episodes
• Quantum Circuits — 4× in this paper · explained in 2 episodes
• Accuracy — 3× in this paper · explained in 1 episode
• Calibration — 2× in this paper · explained in 7 episodes
• Adam — 1× in this paper · explained in 2 episodes
• Benchmarking — 1× in this paper · explained in 3 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• Process tomography — 1× in this paper · explained in 2 episodes

Sources

• Investigation of Parasitic Two-Level Systems in Merged-Element Transmon Qubits
• Dressed-state relaxation in coupled qubits as a source of two-qubit gate errors
• Temperature and Magnetic-Field Dependence of Energy Relaxation in a Fluxonium Qubit
• CMOS-Compatible, Wafer-Scale Processed Superconducting Qubits Exceeding Energy Relaxation Times of 200us
• Non-Local and Non-Markovian Effects of a Microscopic Two-Level Defect in Superconducting Quantum Circuits

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