Technologie / Hardware / Superconducting circuits
Superconducting circuits
Microwave-controlled electrical circuits at millikelvin temperatures.
Der Kompromiss
Stärken: Fast gates; Semiconductor-style fabrication; Mature ecosystem.
Herausforderungen: Cryogenics; Wiring; Crosstalk; Coherence.
Reifegrad: early-commercial (cloud access); fault tolerance in progress.
Spezifische Gate-Geschwindigkeiten, Fidelitys und Qubit-Anzahlen werden hier nicht veröffentlicht – sie ändern sich vierteljährlich. Prüfe die jeweils aktuellen technischen Veröffentlichungen des Unternehmens, nicht Pressemitteilungen.
Wer es verfolgt
IBM
The largest superconducting program: processors on the cloud since 2016, an open software stack (Qiskit), and a public roadmap toward error-corrected systems.
public · IBM
Google Quantum AI
Alphabet's superconducting effort. The 2019 supremacy-benchmark claim and prominent below-threshold error-correction demonstrations.
subsidiary · GOOGL (Alphabet)
Rigetti Computing
A public pure-play building superconducting chips and full systems, with its own fabrication facility and cloud access.
public · RGTI
IQM
Europe's largest superconducting startup, selling on-premise systems to research centers and building co-design processors.
private
Fujitsu / RIKEN
A Japanese industrial-academic partnership producing domestic superconducting systems and hybrid quantum-classical platforms.
research-lab
AWS (Amazon)
Amazon's hardware effort focuses on error-corrected cat-qubit architectures, alongside the Braket cloud service offering other vendors' machines.
subsidiary · AMZN (Amazon)
Alice & Bob
French startup building 'cat qubits'. Superconducting qubits designed to suppress bit-flip errors by construction, aiming to shrink error-correction overhead.
private