A tunable preprocessing stage in GKP Steane error correction minimizes the product of output position and momentum noise variances when 2a equals b in the small-noise regime and outperforms the ME-Steane scheme.
Fukui, High-threshold fault-tolerant quantum computation with the Gottesman-Kitaev-Preskill qubit under noise in an optical setup, Phys
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Optimized Gottesman-Kitaev-Preskill Error Correction via Tunable Preprocessing
A tunable preprocessing stage in GKP Steane error correction minimizes the product of output position and momentum noise variances when 2a equals b in the small-noise regime and outperforms the ME-Steane scheme.