  Superconducting electronics is essential for energy-efficient quantum and
classical high-end computing applications. Towards this goal, non-reciprocal
superconducting circuit elements, such as superconducting diodes (SDs) can
fulfill many critical needs. SDs have been the subject of multiple studies, but
integrating several SDs in a superconducting circuit remains a challenge. Here
we implement the first SD bridge with multiple SDs exhibiting reproducible
characteristics operating at temperatures of a few Kelvin. We demonstrate its
functionality as a full wave rectifier using elemental superconductors and
insulating ferromagnets, with efficiency up to 43%, and ac to dc signal
conversion capabilities at frequencies up to 40 kHz. Our results show a pathway
with a highly scalable thin film platform for nonreciprocal superconducting
circuits. They could significantly reduce energy consumption as well as
decohering thermal and electromagnetic noise in quantum computing.
