The paper shows that in stabilizer codes a change in the logical stabilizer group after a coherent Clifford error and syndrome measurement exactly determines the MAP recovery probability, and that above a critical error rate the toric code loses logical information while random stabilizer codes…
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Monitored random quantum circuits lack divergent multipartite entanglement at criticality unlike standard critical systems, but two-site measurements with a protection mechanism enable genuinely multipartite entangled phases.
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Coherent error induced phase transition
The paper shows that in stabilizer codes a change in the logical stabilizer group after a coherent Clifford error and syndrome measurement exactly determines the MAP recovery probability, and that above a critical error rate the toric code loses logical information while random stabilizer codes…
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Multipartite entanglement structure of monitored quantum circuits
Monitored random quantum circuits lack divergent multipartite entanglement at criticality unlike standard critical systems, but two-site measurements with a protection mechanism enable genuinely multipartite entangled phases.