Simplified Superconducting Circuits Boost Performance With Single-Step Fabrication
Researchers have developed a new fabrication technique for superconducting circuits that replaces traditional bandages with airbridges. This method improves qubit coherence times to over 250 microseconds, facilitating more reliable quantum computations.
Why it matters
Extended coherence times are essential for scaling quantum computers and reducing error rates in complex calculations.
A new architecture for connecting components in superconducting circuits simplifies manufacturing and reduces unwanted material interfaces. Prakiran Baidya from Friedrich-Alexander University Erlangen-Nuremberg and colleagues at Quint Computing GmbH replace traditional ‘bandages’ with solely airbridges for all electrical interconnects. The resulting high-yield, mechanically stable connections range from 0.5 to 4μm in width and 5 to 40μm in length. The resulting transmon qubits exhibit relaxation times exceeding 250μs, confirming the technique maintains high coherence while streamlining device fabrication. This provides a key step towards building more powerful quantum computers.
The article is a technical report on scientific research without political or social framing.
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