QC2026 Dual Core

Raveh Neeman

doi:10.5281/zenodo.22674814

SaxonQ · defect spins · DEMONSTRATED (unveiled and run under operating conditions at Hannover Messe, Apr 2026; third-generation mobile system) (Apr 2026) · 10 physical qubits

architecture: Colour-centre spins — network nodes (NV/SiV/T) · Open on the map

Register profile — the machine's variant of its architecture

qubit type: NV-centre spin in diamond

gate mechanism: not published for this system; SaxonQ: spins 'steered with microwave-frequency gates'

connectivity: two parallel 5-qubit cores; no inter-core link described

control: room-temperature operation from a standard wall outlet, no cryogenics; optical initialisation and readout, microwave gates (SaxonQ)

control placement: room temperature

readout: optical spin readout (SaxonQ platform statement)

gate evidence: no published figure

flags: no published error rates, press sources only

Technologies by layer — the machine's cell per layer

1 Qubit carrier	Colour-centre / defect spin (NV, SiV, SnV, T centre) · primary ▨ SaxonQ paragraph ('two parallel NV diamond processors at 5 qubits per core') ✅ two parallel NV-diamond processors, 5 qubits per core (Hannover Messe, Apr 2026)
2 Encoding	Single-spin (Loss–DiVincenzo) / nuclear-spin encoding · primary ◌ 🔎 NV spin qubits (family-determined); encoding not described
3 Gate mechanism	Microwave / optical spin gates (defect centres, 1Q spins) · primary ▦ 🔎 microwave-frequency spin gates (SaxonQ platform statement; not restated for QC2026)
4 Connectivity / transport	Static nearest-neighbour lattice · primary ◌ 🔎 local register within each 5-qubit core (family-determined); intra-core coupling not described
5 Control	— (Atlas gap: ∅G-nvroom) · primary ▨ 🔎 room-temperature optical initialisation and microwave control from a standard wall outlet, no cryogenics
6 Readout	Fluorescence state detection (ions, defects) · primary ▦ 🔎 optical spin readout (SaxonQ platform statement)
7 Code	— none — nothing in this layer ▨ 🔎 no QEC reported
8 Decoder	— none — nothing in this layer ◌ 🔎 no decoder
9 Interconnect	— none — nothing in this layer ▨ 🔎 two parallel 5-qubit processors; no inter-core link described (parallel cores are not an interconnect)
10 Manufacturing	Diamond growth / implantation (NV, SiV, SnV) · primary ◌ 🔎 NV centres in diamond (family-determined); no fab detail published

evidence: ✅ 1 / 10