Quantum Ledger
Vol. III·Library·Papers
A working bibliography · curated, not exhaustive
Boulder · Colorado
updated weekly

Papers we read

The science behind the Brief. We do not aim to be exhaustive — we aim to name the load-bearing papers a sector reader should be able to discuss.

5 of 12 matching

The reading list

  1. 01
    Quantinuum (Helios team)·Mar 2026·arXiv 2603.01421high

    Below-threshold logical operation with multi-zone QCCD at AQ 64

    First public demonstration of multi-zone QCCD running below the surface-code threshold at #AQ 64 with statistically meaningful logical-error scaling. The strongest single experimental result of the cycle.

    Error Correction·arXiv:2603.01421
  2. 02
    QuEra · Harvard·Feb 2026·Naturehigh

    Algorithmic fault tolerance with neutral-atom Rydberg arrays

    Below-threshold 4-round logical circuits on a multi-hundred-atom Rydberg system; the breakthrough that lifted QuEra into the DARPA Stage B "high" odds tier.

  3. 03
    PsiQuantum·Jul 2025·arXiv 2507.11982high

    Active-volume photonic fault tolerance at the Omega chipset scale

    Manufacturable photonic FTQC architecture at million-qubit scale; the engineering paper that underpins the IQMP build-out.

    Error Correction·arXiv:2507.11982
  4. 04
    Google Quantum AI·Aug 2024·Naturefoundational

    Below-threshold error correction with surface codes on Willow

    First demonstration of exponentially suppressed logical error with surface codes at distance 7 — the proof that scaling error correction is no longer hypothetical.

  5. 05
    Quantinuum (Bombín et al.)·Mar 2023·Naturefoundational

    Demonstration of a fault-tolerant logical CCZ on QCCD ions

    One of the foundational error-corrected logical-gate experiments of the modern era. Still cited in every Stage B roadmap document.

A bibliography is opinionated by definition — what gets in, in what order, and how it is described. We treat these choices as editorial, not technical.