Chinese Team Boosts 20 Two-Qubit Gates on Origin Wukong at 30-40 Nanoseconds
Updated
Updated · CGTN · Aug 7
Chinese Team Boosts 20 Two-Qubit Gates on Origin Wukong at 30-40 Nanoseconds
3 articles · Updated · CGTN · Aug 7
Summary
A Chinese team from Origin Quantum and USTC reported a new controlled-Z design that kept two-qubit gates fast without losing accuracy on the Origin Wukong superconducting quantum computer.
Tests on 20 qubit-pair gates showed the parameter-space expansion CZ scheme suppressed short-time distortion errors and beat conventional CZ gates even at 30-40 nanoseconds.
The advance targets a core quantum-computing trade-off: faster gates usually increase waveform distortion and timing errors, while slower gates reduce overall system performance.
Physical Review Letters published the work, which the researchers said pushed gate performance closer to the dephasing limit and could extend beyond superconducting systems to ion traps and solid-state spin qubits.