{"id":"e60b77af-c590-4afb-9b8c-c4e0b7b428b2","arxiv_id":"2411.08093","paper_version":1,"verdict":"CONDITIONAL","confidence":"HIGH","novelty_score":6.0,"correctness_risk":"medium","formal_verification":"none","parameter_count":0,"one_line_summary":"A blueprint for two scalable spin-liquid-based topological qubit architectures, complete with protocols for anyon creation, readout, braiding, and gates.","lead":"This paper proposes two ways to build and control topological qubits from non-Abelian anyons in electrically insulating quantum spin liquids. One uses magnetic tunnel junction arrays, the other uses semiconductor-spin liquid hybrids, both aimed at fault-tolerant quantum computing in Kitaev materials.","discovery_kind":"new_application","skeptic_critique":{"model":"deepseek-v4-flash","headline":"Sec. IIC postulates that ferromagnet exchange fields locally switch a Kitaev patch into the non-Abelian spin-liquid phase on nanosecond timescales, with no estimate of field magnitude, orientation, or edge integrity; realistic exchange fields may miss the non-Abelian window.","rationale":"The paper is a serious, well-hedged proposal: it labels the device-level switching step a postulate, repeatedly frames the designs as long-term, and builds on credible independent ingredients—Ref. 65's simulated dynamical anyon generation, the thermal-anyon-interferometry formalism of Refs. 63-64/67, and the standard Ising-anyon Clifford-gate algebra. The fusion and braiding protocols include control experiments (e.g., the failed-first-creation control in Sec. IVB) that distinguish topological from mundane explanations, which is good practice. My concern is not an internal inconsistency and not a consensus disagreement; it is a missing quantitative bridge in the first architecture. The central claim of a 'potentially scalable framework' depends for the MTJ design on a local Zeeman-field switch that the paper itself postulates without estimating achievable exchange-field magnitude, orientation, or the fate of the chiral edge during the sweep. I considered alternatives: the electrical scheme's anyon-electron binding (inherited from Refs. 72 and 103, which carry independent derivation and simulation support), the Sec. IVC idealization that bulk quasiparticles are absent on relevant timescales (standard in this literature and testable via the proposed lifetime protocol), and the debated α-RuCl3 signatures (explicitly acknowledged by the paper). None carries as much weight as the MTJ postulate, because every subsequent protocol—generation, manipulation, encoding, braiding, gates, scaling—inherits it. The reader identified the same weakest assumption and reached CONDITIONAL with high confidence; my read does not change that verdict. The concern is genuine but addressable with existing numerical tools, so CONDITIONAL remains the right call.","tokens_in":28999,"tokens_out":18893,"duration_ms":169847,"concrete_test":"Simulate the Fig. 3 setup directly: exact diagonalization or DMRG of the Kitaev honeycomb model (or an extended α-RuCl3-type model) on a cylinder with a spatially localized Zeeman-field patch representing the ferromagnetic sandwich. Scan patch-field magnitude over the range achievable by ferromagnetic proximity and orientation (in-plane and [111]-like), then check: (1) whether the patch enters the non-Abelian spin-liquid phase while the surrounding trivial holes retain a well-defined chiral edge; (2) whether a sweep from trivial to spin-liquid in the patch nucleates an Ising anyon pair with O(1) probability for some duration τ inside the Eq. (3) window and without spurious bulk excitations; (3) whether the resulting edge geometry supports the Sec. IIIA inchworm move. If no achievable field at the required orientation produces the phase, or no τ satisfies the window, the Sec.","verdict_should_be":"UNCHANGED","load_bearing_attack":"The abstract's central claim of a potentially scalable framework depends, for the MTJ architecture, on the local phase-switching step that Sec. IIC states only as a postulate: 'we postulate that the evolution from the topologically trivial to the spin-liquid phase can be realized by changing the Zeeman field from \"small\" to \"large\" values,' with the anti-aligned ferromagnet configuration assumed to produce a trivial phase. Three unquantified requirements sit behind this. (i) Magnitude: for the exemplary material α-RuCl3, the non-Abelian phase is reported only in a field window beginning near 7 T along a specific [111]-like direction (and that identification is itself debated in Refs. 50-56); interface exchange fields from ferromagnetic layers are set by interface physics, typically sub-Tesla to a few Tesla, and are not demonstrated to reach this window. (ii) Orientation: the exchange-field direction is fixed by the ferromagnet anisotropy rather than by the Kitaev phase diagram, so the required [111]-like component is not a free tuning parameter. (iii) Dynamics: Eq. (3)'s diabatic window was derived in Ref. 65 for a quench of Kitaev couplings, not for a local Zeeman sweep that crosses the phase boundary where the gap closes; whether the same window applies to a ferromagnet-toggled patch while preserving the chiral edge structure needed for the holes and point contacts is open. Every later element—generation, manipulation, qubit designs, braiding, phase gates, and the scalable array of Fig. 20—inherits this postulate, making it the single most load-bearing assumption in the first architecture. The paper is honest that this is a postulate, but honesty does not reduce its load-bearing status; the concern is concrete correctness risk, not a consensus dispute.","agreement_with_reader":"agree"},"referee_report":null,"author_rebuttal":null,"desk_editor":null,"rs_alignment":null,"lean_confirmation":null,"pith_extraction":null,"created_at":"2026-08-12T21:59:16.589989+00:00","model_set":{"reader":"deepseek-v4-flash"},"falsifier":null,"supporting_citations":[],"review_version":1}