Authors: Alexander Anferov, Shannon P. Harvey, Fanghui Wan, Jonathan Simon, David I. Schuster

Published on: February 05, 2024

Impact Score: 8.22

Arxiv code: Arxiv:2402.03031

Summary

• What is new: Using low-loss niobium trilayer junctions to create superconducting qubits that operate at temperatures up to 250 mK while maintaining high performance.
• Why this is important: Current superconducting qubits must operate at extremely low temperatures to avoid decoherence, limiting the scalability of quantum computing and integration with high heat dissipation experiments.
• What the research proposes: Implementing niobium trilayer junctions in transmons, leading to qubits with higher frequencies and a significant reduction in sensitivity to quasiparticles, thus allowing operation at higher temperatures.
• Results: Decoherence times of about 1 us and quality factors around $10^5$, indicating stable operation up to 1 K unaffected by quasiparticles and enabling qubit operation up to approximately 250 mK.

Technical Details

Technological frameworks used: nan

Models used: Low-loss niobium trilayer junctions in transmons

Data used: Frequency up to 24 GHz, decoherence, and dephasing times

Potential Impact

Quantum computing companies, cooling technology providers, and industries requiring high heat dissipation in quantum experiments may benefit.

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