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Efficient superconducting diodes and rectifiers for quantum circuitry
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DOI：10.1038/s41928-025-01375-5.png)
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Abstract
En 中文
Superconducting electronics is of use in the development of energy-efficient classical and quantum computing applications. Non-reciprocal superconducting circuit elements, such as superconducting diodes, are needed for such systems, but integrating several superconducting diodes in a superconducting circuit remains a challenge. Here we report a superconducting diode bridge that consists of multiple superconducting diodes with reproducible characteristics and operating temperatures of a few Kelvin. The superconducting diodes are fabricated from thin-film bilayers of the elemental superconductor vanadium and the insulating ferromagnet europium sulfide. Four practically identical diodes are patterned on the same superconducting film to create the superconducting diode bridge. The bridge can function as a full-wave rectifier with an efficiency up to 42 +/- 5%, and offers alternating current (a.c.) to direct current (d.c.) signal conversion capabilities at frequencies up to 40 kHz.
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