Resonator qubit system
The resonator qubit system addresses flux noise susceptibility by using a tunable coupler and ancilla resonator to achieve phase rotations, improving qubit coherence and stability in quantum computing.
WO2025244685A2PCT designated stage Publication Date: 2025-11-27NORTHROP GRUMMAN SYSTEMS CORP
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Patent Information
- Application Number
- PCT/US2025/010756
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-01-30
- Filing Date
- 2025-01-08
- Publication Date
- 2025-11-27
AI Technical Summary
Technical Problem
Conventional qubits are susceptible to flux noise, leading to rapid decoherence, and are unable to implement phase gates effectively.
Method used
A resonator qubit system with a tunable coupler and ancilla resonator, detuned to specific frequencies, uses a tuning element to provide a phase rotation of the quantum state through a DC SQUID, controlling the phase rotation based on resonant frequencies and Berry phase accumulation.
Benefits of technology
The system provides resilient qubits resistant to dephasing from flux noise while enabling phase rotations, enhancing coherence and operational stability in quantum computing environments.
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Smart Images
Figure US2025010756_27112025_PF_FP_ABST
Abstract
One example includes a resonator qubit system. The system includes a resonator qubit having a first resonant frequency and an ancilla resonator having a second resonant frequency that is detuned relative to the first resonant frequency. The system also includes a tunable coupler interconnecting the resonator qubit and the ancilla resonator. The system further includes a tuning element configured to provide a tuning signal to the tunable coupler to provide a phase rotation of a quantum state of the resonator qubit based on the first and second resonant frequencies.
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