Spectroscopy of Quantum Phase Slips for Qubit Control
Published:Dec 30, 2025 22:35
•1 min read
•ArXiv
Analysis
This paper explores the use of spectroscopy to understand and control quantum phase slips in parametrically driven oscillators, which are promising for next-generation qubits. The key is visualizing real-time instantons, which govern phase-slip events and limit qubit coherence. The research suggests a new method for efficient qubit control by analyzing the system's response to AC perturbations.
Key Takeaways
- •Investigates quantum phase slips in parametrically driven oscillators.
- •Uses spectroscopy to visualize real-time instantons.
- •Proposes a new method for efficient qubit control.
- •Focuses on the logarithmic susceptibility (LS) for analysis.
Reference
“The spectrum of the system's response -- captured by the so-called logarithmic susceptibility (LS) -- enables a direct observation of characteristic features of real-time instantons.”