Spin Wave Based Approximate Computing

@article{Mahmoud2021SpinWB,
  title={Spin Wave Based Approximate Computing},
  author={Abdulqader Nael Mahmoud and Frederic Vanderveken and Florin Ciubotaru and Christoph Adelmann and Said Hamdioui and Sorin Dan Cotofana},
  journal={IEEE Transactions on Emerging Topics in Computing},
  year={2021}
}
By their very nature Spin Waves (SWs) enable the realization of energy efficient circuits as they propagate and interfere within waveguides without consuming noticeable energy. However, SW computing can be even more energy efficient by taking advantage of the approximate computing paradigm as many applications are error-tolerant like multimedia and social media. In this paper we propose an ultra-low energy novel Approximate Full Adder (AFA) and a 2-bit inputs Multiplier (AMUL). The approximate… 
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References

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Spin Wave Based Full Adder
TLDR
This paper builds upon SW features and proposes a novel energy efficient Full Adder (FA) design consisting of 1 Majority and 2 XOR gates, which outputs Sum and Carry — out are generated by means of threshold and phase detection, respectively.