Quantinuum Measures About Five Memory Errors Per Million Correction Cycles

Quantinuum’s 98-qubit Helios processor reached an estimated logical-memory error rate of about five per million correction cycles, a result that measures progress in protecting quantum information. The company announced the result at 8 a.m. ET (12:00 UTC) Monday, Oct. 19. The 98-physical-qubit trapped-ion system used a distance-7 color code. It measured 99.9995% logical memory fidelity, equal to an error probability of 5 × 10⁻⁶ per syndrome-extraction cycle. A logical qubit spreads information across multiple physical qubits, where repeated checks can expose and correct faults. Researchers recorded three failures in 29,000 shots, each containing 20 correction rounds.

Source: TokenPost