Qubit Tracker

Helium

Helium in the Qubit Tracker: every value read on the maker's own pages, with its day.

Announced: 10 June 2026 — alice-bob.com, read 16 October 2026
Modality: Bosonic (superconducting) — alice-bob.com, read 16 October 2026
Physical qubits: 18 qubits — alice-bob.com, read 16 October 2026
Logical qubits: Not confirmed: The maker describes one logical qubit as “in the making”; it does not report a demonstrated logical qubit with a code and paper for Helium.
Two-qubit gate fidelity: Not confirmed: The maker's Helium specifications do not print a two-qubit gate fidelity.
One-qubit gate fidelity: Not confirmed: The maker reports 94.2% for a named Z gate, not a general one-qubit gate fidelity.
The maker’s own metric: {"name":"Z gate fidelity in 26.5 ns","value":94.2} — alice-bob.com, read 16 October 2026
Access: On-premise — alice-bob.com, read 16 October 2026
Status: Available — alice-bob.com, read 16 October 2026

Sources