This paper proposes a space-time-modulated Josephson metasurface for multi-frequency coupling of superconducting qubits, claiming all-to-all connectivity and improved coherence without experimental evidence.
In the monochromatic case (∆ ω = 0), gij,kl ̸= 0 only for adjacent qubits
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Space-Time-Coupled Qubits for Enhanced Superconducting Quantum Computing
This paper proposes a space-time-modulated Josephson metasurface for multi-frequency coupling of superconducting qubits, claiming all-to-all connectivity and improved coherence without experimental evidence.