Dual dc bias on a Bloch transistor produces phase-locked Josephson-Bloch oscillations yielding dual Shapiro steps at I_B = 2e f_J and exact transconductance 1/R_Q.
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Far-detuned cross-resonance designs cut frequency collisions in transmon processors, achieving 10% collision-free yield for 1024 qubits with qubit-frequency spread reduced to 6.8 MHz.
Orthogonal FDM with rectangular pulses suppresses interference to enable high-fidelity simultaneous gates on multiple qubits via a single microwave line.
Cross-Kerr coupling in the two-photon bosonic regime of a SQUID-coupled phase qubit never vanishes due to potential asymmetry and coupler nonlinearity, with explicit limits on the number of coherent states needed for the approximation.
citing papers explorer
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Dual Shapiro steps and fundamental transconductance in dc driven Bloch transistor
Dual dc bias on a Bloch transistor produces phase-locked Josephson-Bloch oscillations yielding dual Shapiro steps at I_B = 2e f_J and exact transconductance 1/R_Q.
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Systematic frequency-collision analysis of the cross-resonance gate outside the straddling regime
Far-detuned cross-resonance designs cut frequency collisions in transmon processors, achieving 10% collision-free yield for 1024 qubits with qubit-frequency spread reduced to 6.8 MHz.
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Orthogonal frequency-division multiplexing for simultaneous gate operations on multiple qubits via a shared control line
Orthogonal FDM with rectangular pulses suppresses interference to enable high-fidelity simultaneous gates on multiple qubits via a single microwave line.
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Two-photon coupling via Josephson element II: Interaction dressing, cross-Kerr coupling, and limits of low-energy bosonic model
Cross-Kerr coupling in the two-photon bosonic regime of a SQUID-coupled phase qubit never vanishes due to potential asymmetry and coupler nonlinearity, with explicit limits on the number of coherent states needed for the approximation.