QpiAI Indus

QpiAI · superconducting circuits · DEPLOYED (14 Apr 2025) · 25 physical qubits · access: research use

qubit type: transmon

gate mechanism: tunable coupler (assumed)

connectivity: not published

control: room-temperature RF; full in-house stack (QPU + control + mK cryogenics + Quantum-HPC)

control placement: room-temp

readout: dispersive

gate evidence: no published figure

flags: no published error rates, source not confirmed

1 Qubit carrier	Transmon · primary ▨ 🔎 superconducting transmon QPU, 25 qubits; deployed 14 Apr 2025; no coherence or fidelity published
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 ▨ 🔎 tunable coupler (assumed); no gate numbers published
4 Connectivity / transport	Static nearest-neighbour lattice · primary ▨ 🔎 connectivity not published (register)
5 Control	Room-temperature electronics + per-qubit coax/flex · primary ▨ ✅ room-temperature RF; full in-house stack: QPU + control + mK cryogenics + Quantum-HPC (deployed 14 Apr 2025)
6 Readout	Dispersive microwave readout (+TWPA, Purcell) · primary ◌ 🔎 dispersive readout (register)
7 Code	— none — nothing in this layer ▨ 🔎 no QEC code (L0); explicitly NISQ, no peer-reviewed paper
8 Decoder	— none — nothing in this layer ▨ 🔎 no decoder; no real-time path (register)
9 Interconnect	— none — nothing in this layer ◌ 🔎 monolithic, single module; no interconnect
10 Manufacturing	Superconducting-qubit lithography (Al/AlOx/Al junctions, Nb wiring, 300 mm) · primary ◌ 🔎 Superconducting-qubit lithography (Nb/Al JJ, 300 mm) — IBM Albany 300 mm / Anderon foundry; Google Santa Barbara; Rigetti ABAA trimming (97.4% frequency-targeting success); OQC 500-qubit wafer-scale…

evidence: ✅ 1 / 10