Rigetti Novera

Raveh Neeman

doi:10.5281/zenodo.22674814

Rigetti Computing · superconducting circuits · DEPLOYED (on-prem QPU launched Dec 2023, 'available to ship immediately'; installed at Horizon Quantum, Singapore, and Montana State University QCORE) (Dec 2023 (launched)) · 9 physical qubits · access: on-prem sold (Horizon Quantum, Singapore; Montana State University QCORE; Pittsburgh Supercomputing Center TangleLab, announced Aug 2026)

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

Register profile — the machine's variant of its architecture

qubit type: tunable transmon

gate mechanism: 12 tunable couplers between adjacent qubits; native two-qubit gate not named on the page

connectivity: 3x3 square lattice

control: customer-supplied control system (drive 4–5 GHz, DC + RF flux up to 1 GHz, readout 7–8 GHz) and dilution refrigerator (MXC plate >=290 mm, >=14 µW at 20 mK)

control placement: room-temp

readout: dispersive (readout resonators, 7–8 GHz)

gate evidence: no published figure

flags: company claim

Technologies by layer — the machine's cell per layer

1 Qubit carrier	Transmon · primary ▦ specifications ('3x3 array of tunable transmons') ✅ 3x3 array of tunable transmons (9-qubit QPU)
2 Encoding	Bare physical qubit (no encoding) · primary ◌ 🔎 bare transmon two-level subspace; no encoding beyond the physical qubit
3 Gate mechanism	Tunable-coupler CZ / iSWAP · primary ▦ specifications ('Tunable Couplers 12') ✅ 12 tunable couplers between adjacent qubits; two-qubit gate type not named
4 Connectivity / transport	Static nearest-neighbour lattice · primary ▦ specifications (3x3 array, 12 tunable couplers) ✅ 3x3 square lattice, couplers between adjacent pairs
5 Control	Room-temperature electronics + per-qubit coax/flex · primary ▦ system requirements (control hardware) ✅ customer-supplied control electronics: drive 4–5 GHz, DC + RF flux up to 1 GHz, readout 7–8 GHz
6 Readout	Dispersive microwave readout (+TWPA, Purcell) · primary ▦ readout description ('based on their dispersive shifts') ✅ readout resonators; qubit states identified by their dispersive shifts
7 Code	— none — nothing in this layer ▦ 🔎 no QEC code
8 Decoder	— none — nothing in this layer ◌ 🔎 no decoder
9 Interconnect	— none — nothing in this layer ◌ 🔎 single 9-qubit chip (the separate 5-qubit chip is not coupled to it)
10 Manufacturing	Superconducting-qubit lithography (Al/AlOx/Al junctions, Nb wiring, 300 mm) · primary ▦ 'designed and manufactured in-house at Fab-1' ✅ designed and manufactured in-house at Rigetti's Fab-1

evidence: ✅ 6 / 10