beat · 4 stories
The 8-inch wafer line builds the full superconducting chip stack on-site — the qubit-making layers, from the heart of each quantum bit through 3D chip-stacking packaging. It's the manufacturing backbone behind India's quantum push.
University of Jyväskylä researchers map the pipeline for renting cloud quantum compute and find the major platforms cannot prove what ran, who authorized it, or which tenant bled into which run.
Barber and Pirandola lift the best-known lower bound for a noisy two-way quantum channel, a step on an open problem rather than a deployment signal.
A circuit that unifies readout, Purcell protection (filtering stray resonator radiation that would otherwise shorten qubit lifetime), and reset could trim component counts on superconducting chips, though the numbers come from a single arXiv