ETH Zurich

research · research-org · Zurich, Switzerland · comp.phys.ethz.ch

Machines in the Atlas (1)

• Surface-17 — DEMONSTRATED, 17 q, 2022-2025

Machines it co-developed (filed under another organisation) (1)

• IBM Quantum System Two at CSCS (Swiss Quantum Innovation Hub) — IBM with ETH Zurich (CSCS) and Lockheed Martin

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
• Rotated surface code (+ yoked variants) · 1
• MWPM / Sparse Blossom (+ correlated matching) · 1
• Superconducting-qubit lithography (Al/AlOx/Al junctions, Nb wiring, 300 mm) · 1

Architectures

• Transmon lattice with tunable couplers

Mentioned in the briefs of

• Error-detection codes ([[4,2,2]], d=2 surface, iceberg, spacetime)
• Ion-trap fabrication (surface-electrode chips; machined 3D blade traps)
• Trapped atomic ion