QuantWare Tenor-D64

Raveh Neeman

doi:10.5281/zenodo.22674814

QuantWare

QuantWare Tenor-D64

QuantWare · superconducting circuits · shipping (stated 2026) (2026) · 64 physical qubits · access: sold as components

architecture: Transmon lattice with tunable couplers · Open on the map

Register profile — the machine's variant of its architecture

qubit type: tunable transmon with fixed couplers (D-line)

gate mechanism: fixed couplers

connectivity: planar square lattice

control: room-temperature RF

control placement: room-temp

readout: dispersive

gate evidence: no published figure

flags: no published error rates, source not confirmed

Technologies by layer — the machine's cell per layer

1 Qubit carrier	Transmon · primary ▦ §Tenor-D64 'Shipping in 2026 \| 64 qubits' (octagonal chip-board photo); §D-line (tunable transmon qubits) ✅ tunable transmon with fixed couplers (D-line); 64 q, "shipping 2026"
2 Encoding	Bare physical qubit (no encoding) · primary ◌ 🔎 Bare two-level subspace — Computational subspace of an anharmonic oscillator; leakage to \|2⟩ is the price.
3 Gate mechanism	Tunable-coupler CZ / iSWAP · primary ▦ §D-line (tunable transmon qubits with fixed couplers) ✅ fixed couplers (D-line); no fidelity metrics published
4 Connectivity / transport	Static nearest-neighbour lattice · primary ▨ 🔎 planar square lattice per chip, 64 q
5 Control	Room-temperature electronics + per-qubit coax/flex · primary ◌ §D-line; §Tenor-D64 🔎 D-line page gives no control or packaging for Tenor-D64; VIO 1K / VIO 40K labels sit with Baritone-D450 / Bass-D18K; customer room-temperature RF (register)
6 Readout	Dispersive microwave readout (+TWPA, Purcell) · primary ◌ 🔎 dispersive
7 Code	— none — nothing in this layer ▨ 🔎 no QEC code run by QuantWare (customers run codes); sold as component
8 Decoder	— none — nothing in this layer ▨ 🔎 no decoder (no QEC)
9 Interconnect	— none — nothing in this layer ◌ 🔎 monolithic single 64-q chip, no interconnect
10 Manufacturing	Superconducting-qubit lithography (Al/AlOx/Al junctions, Nb wiring, 300 mm) · primary ▨ ✅ QuantWare superconducting QPU fab; KiloFab (Delft) opens 2026 for a claimed 20× capacity increase

evidence: ✅ 3 / 10