HOW IT WORKS
What Are Germanium Qubits?
Germanium hole-spin qubits exploit the quantum properties of charge carriers (holes) confined in germanium quantum wells. By using electric fields applied through metal gates, we define quantum dots that trap individual holes — each serving as a qubit whose spin state encodes quantum information.
Unlike superconducting or ion-trap qubits, spin qubits in germanium require no exotic materials and can be defined using the same lithographic techniques used to manufacture classical semiconductor chips. This makes them uniquely suited for mass production.
- Electric-field control — no microwave cavity required
- Ultra-fast gate operations in the nanosecond range
- Strong spin-orbit coupling for all-electric qubit manipulation
- Low-footprint: hundreds of qubits per square micron at scale
Semiconductor Manufacturing Compatibility
Our qubit devices are fabricated using industry-standard semiconductor processes — epitaxial growth of Ge/SiGe quantum wells, photolithography, and metal gate deposition. This is the same technology stack used to produce billions of transistors per chip.
By building on this foundation, Groove Quantum eliminates the need for bespoke fabrication infrastructure. Our devices can be produced in existing 300mm semiconductor foundries, enabling a scale-up path that is economically viable and industrially feasible.
- Compatible with 300mm CMOS foundry processes
- No dilution fridge integration challenges from exotic materials
- Cost per qubit decreases with wafer-scale production
Performance & Fidelity
Groove Quantum's devices hold world-record performance benchmarks for spin-qubit platforms. Our 2024 Science publication demonstrated 99%+ two-qubit gate fidelity in a 10-dot germanium qubit array — surpassing the thresholds generally required for fault-tolerant quantum error correction.
