There's been a lot of interesting research in superconducting computer architectures that bear similarities to these concepts; some of it pursuant to quantum co

There's been a lot of interesting research in superconducting computer architectures that bear similarities to these concepts; some of it pursuant to quantum computing, some classical. [1] DACs that use switching of Josephson junctions to store persistent current, [2, 3] logic and storage elements based on the superconducting phase change (e.g. the ability of a metal to hold a voltage differential), and even [4] rudimentary AQFP-based FPGAs! I've seen talks describing more elaborate versions of [4] but can't find a good paper. A pretty good overview of this frontier is [5]. [1] https://arxiv.org/pdf/1401.5504.pdf https://arxiv.org/pdf/1401.5504.pdf [2] https://arxiv.org/pdf/1403.6423.pdf https://arxiv.org/pdf/1403.6423.pdf [3] https://pdfs.semanticscholar.org/0e4e/237bf8b39600de05732d0bdaf5cf27ca5f67.pdf https://pdfs.semanticscholar.org/0e4e/237bf8b39600de05732d0b... [4] https://ieeexplore.ieee.org/document/7383477 https://ieeexplore.ieee.org/document/7383477 [5] http://snf.ieeecsc.org/file/8506/download?token=StMHBjkP http://snf.ieeecsc.org/file/8506/download?token=StMHBjkP