Technical details unveiled for the 78-qubit Chuang-tzu 2.0 quantum processor

Researchers have unveiled a new superconducting quantum processor, dubbed Chuang-tzu 2.0, which features 78 qubits arranged in a square lattice configuration. The hardware utilizes 137 tunable couplers to connect the qubits.

During experimental testing, researchers established initial states using X gates with an average fidelity of 99.4%. The system employs Rapid Modulation Pulses (RMD) for control and allows for the simultaneous readout of all qubits.

The device uses flip-chip bonding technology to integrate two separate chips: one for the qubits and another for control and readout wiring. Researchers also applied GMPS simulation methods to analyze the system efficiently.

While the processor shares similarities with other high-end quantum hardware, the team noted specific structural connectivity differences compared to Google's Sycamore processor.

The disclosure of technical specifications for the 'Chuang-tzu 2.0' processor represents a significant and methodical advance in the global quantum computing race. While its 78-qubit capacity stops short of breaking world records, the transparent release of its architecture, control methodologies, and simulation techniques signals a maturation of development capabilities that transcends the pursuit of raw qubit counts.

The processor’s namesake—the ancient Chinese philosopher Zhuangzi—serves as a clear marker of its origin, situating the achievement firmly within the context of the escalating strategic technological competition between Washington and Beijing. The project positions itself as a direct challenger to systems developed by Silicon Valley incumbents such as Google and IBM.

Crucially, the latest technical data emphasizes quality over scale. Detailed disclosures regarding gate fidelity, sophisticated pulse control techniques (RMD), and a physical dual-chip architecture indicate a concerted focus on resolving the fundamental hurdles of stability and scalability. These remain the primary barriers to the realization of practical, utility-scale quantum systems. Rather than a singular breakthrough, this development serves as evidence of sustained progress in a field increasingly viewed as a cornerstone of future economic competitiveness and national security.