Quasi-exact quantum computation

@article{Wang2019QuasiexactQC,
  title={Quasi-exact quantum computation},
  author={Dong-Sheng Wang and Guanyu Zhu and Cihan Okay and Raymond Laflamme},
  journal={arXiv: Quantum Physics},
  year={2019}
}
We study quasi-exact quantum error correcting codes and quantum computation with them. A quasi-exact code is an approximate code such that it contains a finite number of scaling parameters, the tuning of which can flow it to corresponding exact codes, serving as its fixed points. We find that the incompatibility between universality and transversality of the set of quantum gates does not persist in the quasi-exact scenario. A class of covariant quasi-exact codes is defined which proves to… 
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