Syndrome resampling increases QEC thresholds and cuts logical errors by up to four orders of magnitude by biasing toward likely syndromes, linked to Rényi coherent information phase transitions.
Scalable accuracy gains from postselection in quantum error correcting codes
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Entanglement boosting protocol prepares logical Bell pairs in rotated surface codes with orders-of-magnitude lower link-limited volume, reaching 10^{-10} logical error from 86 physical pairs at 1% error using soft decoders and postselection within one patch.
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Syndrome resampling enhances quantum error correction thresholds
Syndrome resampling increases QEC thresholds and cuts logical errors by up to four orders of magnitude by biasing toward likely syndromes, linked to Rényi coherent information phase transitions.
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Entanglement boosting: Low-volume logical Bell pair preparation for distributed fault-tolerant quantum computation
Entanglement boosting protocol prepares logical Bell pairs in rotated surface codes with orders-of-magnitude lower link-limited volume, reaching 10^{-10} logical error from 86 physical pairs at 1% error using soft decoders and postselection within one patch.