Avoiding coherent errors with rotated concatenated stabilizer codes
@article{Ouyang2020AvoidingCE, title={Avoiding coherent errors with rotated concatenated stabilizer codes}, author={Yingkai Ouyang}, journal={npj Quantum Information}, year={2020}, volume={7}, pages={1-7} }
Coherent errors, which arise from collective couplings, are a dominant form of noise in many realistic quantum systems, and are more damaging than oft considered stochastic errors. Here, we propose integrating stabilizer codes with constant-excitation codes by code concatenation. Namely, by concatenating an [[ n , k , d ]] stabilizer outer code with dual-rail inner codes, we obtain a [[2 n , k , d ]] constant-excitation code immune from coherent phase errors and also equivalent to a Pauli…
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