Quantum

Dynamical Light-Matter Coupling with Protected Superconducting Oscillators

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 10/11/2026, 08:43:25 UTC.

Briefings

This research addresses the trade-off between precise flux control for microwave cavity frequency tuning and the preservation of long-lived bosonic modes for quantum information storage. The study demonstrates that on-chip lithographic filtering and off-plane remote flux sources can achieve broadband flux control while maintaining photon lifetimes exceeding several hundred microseconds. These advancements enable real-time manipulation of Rabi model parameters, facilitating advanced quantum operations like parametric resonance activation and qudit state preparation.

Key points

• On-chip lithographic filtering and off-plane remote flux sources were successfully implemented to achieve broadband flux control in microwave cavities.
• Photon lifetimes were maintained at several hundred microseconds, significantly improving upon the tens of microseconds previously observed with external flux bias.

Context

Superconducting circuits hosting long-lived bosonic modes are a key platform for quantum information processing, but external flux bias introduces significant losses that limit single-photon lifetimes. This research addresses that critical trade-off to enable more complex synthetic light-matter systems.

Limitations

The study focuses on specific hardware solutions for on-chip flux control and demonstrates improved photon lifetimes; however, the specific impact on operational primitives and broader quantum sensing applications remains unverified.

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