New superfluid helium qubit could cut error rates 100-fold

Researchers at the University of Surrey have proposed a qubit based on superfluid helium-3 that could be about 100 times less error-prone than conventional superconducting qubits. The SHOQ device could be integrated with existing superconducting quantum hardware, including as quantum memory.

• SHOQ qubit uses charge-neutral superfluid helium-3
• Calculations predict error rates about 100x lower than superconducting qubits
• Design could be integrated with superconducting quantum systems
• Next step is building a prototype to test predictions