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China Unveils 200-Qubit Hanyuan-2 Dual-Core Neutral-Atom Quantum Computer

Developers pitch a mid-scale, energy-light machine for practical workloads.

Overview

  • CAS Cold Atom Technology introduced Hanyuan-2, a 200-qubit system that uses neutral atoms and a dual-core processor architecture.
  • The machine contains two arrays built from 100 rubidium‑85 atoms and 100 rubidium‑87 atoms that can run in parallel or assign one array to assist with error checks.
  • The company says the cabinet-size unit draws under 7 kW and relies on laser cooling, which avoids the ultra‑low‑temperature refrigerators common in many quantum setups.
  • State media labeled it the first dual‑core quantum processor, yet the team has released no gate fidelity, coherence time, or error rate data and no peer‑reviewed paper.
  • The firm frames the design for near‑term industrial use after early Hanyuan‑1 contracts, aligning with a wider move toward mid‑scale machines over massive qubit counts.