Critical — ZnO Triple Quantum Dots As Pre-Binary Qudit Custody. This article develops a qudit-first certification reading of a ZnO triple quantum dot platform before qubit read-down. The source reports few-electron triple quantum dots in ZnO heterostructures, gate-controlled interdot coupling, a two-dimensional electron gas interface, charge-sensing readout, and a QCA correlated-motion witness. The present framework treats QD1-QD2-QD3 as one pre-binary qudit capsule rather than as three immediate qubit endpoints. The article introduces an around-the-individual-dot-anchor route that preserves dot-facing charge evidence, interdot coupling, QCA middle behavior, lattice-facing ZnO interface support, sensor witness, and typed-zero custody as one carried triangulation. Materials-Qudit PTT, Dot-To-Lattice Detour, Read-Through Measurement, Spin First, three-frame return, Hilbert/TWA+ payback, and Second-Generation Hilbert typed-zero discipline are used to certify the richer triple-dot relation before any binary endpoint read consumes the result. The article is Critical because it blocks premature flattening of a multi-dot qudit object into qubit language and supplies a stricter route for preserving carrier relation, support, witness, and read-down custody.
Critical — ZnO Triple Quantum Dots As Pre-Binary Qudit Custody. This article develops a qudit-first certification reading of a ZnO triple quantum dot platform before qubit read-down. The source reports few-electron triple quantum dots in ZnO heterostructures, gate-controlled interdot coupling, a two-dimensional electron gas interface, charge-sensing readout, and a QCA correlated-motion witness. The present framework treats QD1-QD2-QD3 as one pre-binary qudit capsule rather than as three immediate qubit endpoints. The article introduces an around-the-individual-dot-anchor route that preserves dot-facing charge evidence, interdot coupling, QCA middle behavior, lattice-facing ZnO interface support, sensor witness, and typed-zero custody as one carried triangulation. Materials-Qudit PTT, Dot-To-Lattice Detour, Read-Through Measurement, Spin First, three-frame return, Hilbert/TWA+ payback, and Second-Generation Hilbert typed-zero discipline are used to certify the richer triple-dot relation before any binary endpoint read consumes the result. The article is Critical because it blocks premature flattening of a multi-dot qudit object into qubit language and supplies a stricter route for preserving carrier relation, support, witness, and read-down custody.
Foundational — QCore 6: Pre-Binary Sign Net Worker Beyond Quantum A-to-B, With SCADA Release — This article presents QCore 6 as the successor architecture to QCore V, preserving the pre-binary local worker while adding Sign Net custody, SCADA release, read-through M witness measurement, Sadovskii Spin First, upstream lattice carry, double-detour return, and endpoint verification into one runtime order. The central claim is that QCore remains outside the native Quantum A-to-B corridor: A-to-B, Bob verification, midpoint witness drains, binary handling, and SCADA command flow become client or bridge uses of a worker result rather than the original storytelling layer. QCore 6 classifies the richer object before ordinary binary, public-row, command-client, or endpoint authority becomes live. The worker freezes the run, declares custody, preserves typed-zero pressure, separates recognition from enforcement through SEB and MAP, releases only bounded survivors, and verifies exported endpoints through sealed capsules. The article also supplies a JSON-style replay template and falsifiable tests for SCADA custody, stored-anchor separation, 2.75 continuity, Sadovskii Spin First, lattice forecast, read-only M witness use, double-detour return, and full QCore 6 replay.
Foundational — Gate-On First: A Bidirectional Sign-Net Protocol for Controlled-Z Gate Certification with Typed-Zero, Mapped Support Matching, and D4 Custody. This article should be read as a reusable external-certification architecture for connecting device-independent quantum-gate evidence to Sign-Net decision custody. The protocol records the gate-on block first as a frozen, ungraded candidate while preserving the source-compatible certification order in which the identity-setting correlations establish the upstream reference structure before the unitary-setting evidence receives authority. Full device-independent and almost device-independent operation remain separate report classes, and the Sign-Net engine receives only committed external settings, outcomes, source and repeater records, isolation evidence, confidence intervals, and frozen reference definitions rather than hidden information from inside the tested gate. The article replaces literal Local-inside-Universal language with mapped support matching across distinct observations. A Local record containing four mapped items and a gate-on record containing ten items can establish four shared matches and six active-only items without treating the two physical conditions as simultaneously nested. A two-knob measurement then reads bottom-up Local somethingness represented in the gate-on candidate and top-down gate-on nothingness relative to the Local demand. These quantities use separate denominators and remain distinct from physical emptiness, unresolved missingness, (0T), and inherited (0S) custody. Cross-Chain Closure compares the opposed Local/identity records at the fixed (S=0) address and separately compares the returned gate-on block with the frozen first observation. D4 retains candidate evaluation, typed-zero review, mapped matching, final grading, and all onward promotion authority. D5 provides bounded recovery and Strong-to-Weak witness return, while D6 receives only D4-authored full-sign or Strong-to-Weak (0S) promotion. A fourteen-scenario Monte Carlo grammar test produces fifteen thousand baseline D6 promotions with zero false-physical certifications, zero unsafe promotions, and zero missed-certifiable outcomes inside the declared synthetic suite. A separate Weaker-to-D6 countertest produces five thousand false and unsafe promotions, directly fixing the promotion boundary while leaving Bell self-testing and physical device-independent implementation to upstream experimental work.
Significant — Reading Spatial PTT Qudits In Sign Net From Alice To Bob. This important article defines a Bob-side reinflated-qudit straight reader for Spatial PTT transfer. Instead of sending a full finalized spatial qudit body, Alice sends a compact post-final 3D-to-2D address capsule and sign/check branch. Bob reinflates a comparable qudit structure, runs the declared straight-read breakdown code, and compares Bob’s compressed capsule against Alice’s sealed capsule while preserving sign custody, blanks, ordered history placeholders, and anti-flattening provenance. The Python v4 synthetic test reports fourteen expected classifications with zero unexpected classifications and an average transfer object of about 18.54 percent of the synthetic full qudit body.
Foundational — From Two-Dimensional Photon A-to-B Routing to a True Three-Dimensional Pedigree–Transmission–Triad-of-Triads (PTT) Engine. This article develops a three-dimensional custody engine for preserving and comparing correlated records from a cascaded quantum network. Rather than placing the upstream A-side and downstream B-side observations into one shared qudit cell, the engine gives each record its own three-dimensional address, corridor identity, fire history, position count, and sealed route record. A shared Correlation ID and frozen comparison-window number bind the pair without averaging their amplitudes, phases, support fields, typed-zero histories, or native source times. The physical cascade remains unidirectional from A to B. A frozen time-translation rule maps the distinct source times and propagation delay into one correlation window without claiming physically simultaneous qubit fires. Cross-Chain later compares the sealed A-side and B-side records at the signed balance center S = 0. The B-side record may strengthen downstream evidence, but it cannot rewrite the A-side record, the upstream emission history, or the frozen source contract. This preserves paired comparison while enforcing no backward authorship. After a signed direct block, the production engine tests a declared four-route three-dimensional forward-bypass set: two x-y routes and two x-z routes. This selected set does not claim to enumerate every possible corner route in a three-dimensional neighborhood. Each route keeps its own support, direction, timing, phase-facing, and burden record. A successful bypass retains Strong-to-Weak authority because the original direct block remains part of its history. Directional Empty Frames 1 through 3 separate outward reading, burdened return, and terminal stopping authority. EF1 preserves the inward three-dimensional support read while opening the first outward directional witness. EF2 is the Strong-to-Weak and Weaker decision region: a forward-preserving return remains eligible for Strong-to-Weak, while a backward-burdened return becomes eligible for Weaker. EF3 is the outer kill and flattening boundary. It stops further outward movement, forces the bounce through EF2, and keeps the final direction witness at the EF1-EF2 edge rather than allowing hidden support to accumulate at the outer boundary. Typed-zero custody controls which routes may continue. Sign-empty launch failure writes 0T. A signed direct block may form a 0S candidate carrying inherited half-sign continuity. A contacted timeout writes 0S timeout only when inherited sign and support remain demonstrably present through qualified contact; precontact loss remains 0T or the declared failure class. Detour and the Common Detour Reporter activate only after all four declared bypass routes fail while a live signed candidate remains. One logical Reader receives the completed sealed measurement record, including the separate corridor histories, selected bypass, typed-zero fields, Cross-Chain closure bits, and route grade. The Reader may consume multiple tomography settings, detector records, positive operator-valued measurements, or physical channels, but it remains one endpoint authority rather than a replacement for those experimental measurements. A 400,000-cycle Python synthetic reports 90.953 percent Strong-or-Strong-to-Weak route admissibility, 8.795 percent remaining post-route typed-zero burden, and 5.406 percent Reader classification error. Four-route bypass recovery returns 46.150 percent of all cycles to Strong-to-Weak custody, while Detour returns another 11.348 percent. Ten independent seeds, nine stress combinations, and twenty production guardrails test address separation, excluded-corner discipline, time translation, typed-zero routing, no-backflow, Detour activation, Cross-Chain closure, Reader authority, and deterministic counter behavior. The article does not replace the source experiment’s entanglement formation, concurrence measurement, tomography, channel-loss analysis, or hardware calibration. Its contribution is a reusable logical custody engine for preserving two correlated histories, routing them without shared-cell flattening, separating physical, route, and Reader burdens, and producing one auditable endpoint decision.
Initialization, two-spin coherent manipulation, and readout of a three-spin qubit are demonstrated using a few-electron triple quantum dot. The three-spin qubit is designed to allow all operations for full qubit control to be tuned via nearest-neighbor exchange interaction. Fast readout of charge states takes advantage of multiplexed reflectometry. Decoherence measured in a two-spin subspace is found to be consistent with predictions based on gate voltage noise with a uniform power spectrum. The theory of the exchange-only qubit is developed and it is shown that initialization of only two spins suffices for operation. Requirements for full multiqubit control using only exchange and electrostatic interactions are outlined.