Chalmers University of Technology

academic · Gothenburg, Sweden · https://www.chalmers.se/en/

Machines in the Atlas (1)

• WACQT quantum computer (Chalmers 25-qubit flip-chip processor) — DEMONSTRATED (testbed access for algorithms announced for 2025), 25 q, 2023-2024

Technologies its machines use

• Transmon · 1
• Bare physical qubit (no encoding) · 1
• Tunable-coupler CZ / iSWAP · 1
• Static nearest-neighbour lattice · 1
• Room-temperature electronics + per-qubit coax/flex · 1
• Dispersive microwave readout (+TWPA, Purcell) · 1
• Multi-die packaging in one module (flip-chip, bump-bonded control die) · 1
• Superconducting-qubit lithography (Al/AlOx/Al junctions, Nb wiring, 300 mm) · 1

Architectures

• Transmon lattice with tunable couplers

Mentioned in the briefs of

• Multi-die packaging in one module (flip-chip, bump-bonded control die)