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  "slug": "beyond-pure-dephasing-a-quantitative-analysis-of-two-level-error-correction-for-",
  "title": "Beyond Pure Dephasing: A Quantitative Analysis of Two-Level Error Correction for Multi-Spin Molecular Qubits",
  "authors": [
    "Rowan Brad Quni-Gudzinas"
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  "abstract": "Molecular spin systems exhibit a natural hierarchy of decoherence channels: fast pure dephasing (characterized by the transverse relaxation time T₂) and comparatively slow energy relaxation (characterized by T₁). A recent proposal argues that fault-tolerant quantum computing with molecules requires a hybrid two-level encoding: a first-level dephasing-tolerant unit (DTU) that suppresses the leading pure-dephasing channel, followed by a second-level multi-qubit code that corrects residual off-diagonal (relaxation-like) errors [1,2]. This paper provides an independent quantitative assessment of that scheme. [...]",
  "abstract_markdown": "Molecular spin systems exhibit a natural hierarchy of decoherence channels: fast pure dephasing (characterized by the transverse relaxation time T₂) and comparatively slow energy relaxation (characterized by T₁). A recent proposal argues that fault-tolerant quantum computing with molecules requires a hybrid two-level encoding: a first-level dephasing-tolerant unit (DTU) that suppresses the leading pure-dephasing channel, followed by a second-level multi-qubit code that corrects residual off-diagonal (relaxation-like) errors [1,2]. This paper provides an independent quantitative assessment of that scheme. [...]",
  "date": "2026-10-05",
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    "titles": [
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        "title": "Beyond Pure Dephasing: A Quantitative Analysis of Two-Level Error Correction for Multi-Spin Molecular Qubits"
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        "description": "Molecular spin systems exhibit a natural hierarchy of decoherence channels: fast pure dephasing (characterized by the transverse relaxation time T₂) and comparatively slow energy relaxation (characterized by T₁). A recent proposal argues that fault-tolerant quantum computing with molecules requires a hybrid two-level encoding: a first-level dephasing-tolerant unit (DTU) that suppresses the leading pure-dephasing channel, followed by a second-level multi-qubit code that corrects residual off-diagonal (relaxation-like) errors [1,2]. This paper provides an independent quantitative assessment of that scheme. [...]",
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