Quantum Hardware
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SFQ-Programmable Millikelvin DACs Enable Scalable, Coherence-Preserving Control of Superconducting Qubits
A team has demonstrated a superconducting digital-to-analog converter (DAC) operating at millikelvin temperatures, integrated directly with high-coherence fluxonium qubits in a multi-chip module. The DAC generates persistent analog flux signals for qubit parameter tuning and is programmed via single…
FPGA Accelerates Quantum LDPC Decoding
IBM has developed an FPGA-based Relay-BP decoder for quantum Low-Density Parity-Check (qLDPC) codes, demonstrating significant speed improvements over GPU-based solutions. This advancement enables real-time decoding on hardware, which is crucial for practical quantum error correction.