Quantum gate speed and fidelity are a natural tradeoff in quantum computing: faster pulses distort easily, while precise operations require longer pulses. A joint research team from Origin Quantum Computing Technology (Hefei) Co., Ltd. and the University of Science and Technology of China published a 'Parameter Space Extension Controlled Phase gate (PSE-CZ)' scheme in *Physical Review Letters* on August 17, resolving this tension.
Experimental validation was performed on China's independently developed superconducting quantum computer 'Origin Wukong'. Without extending pulse duration, the scheme introduces new tunable parameters that simultaneously correct two core error types—leakage and phase errors—achieving bidirectional optimization of speed and precision. Testing across 20 two-qubit gate configurations showed that at ultra-short gate lengths of 30–40 nanoseconds, the scheme significantly outperforms conventional approaches, with error control approaching the hardware decoherence limit.
Where the 'Fast vs. Accurate' Problem Gets Stuck
Quantum gates are the basic operational units of quantum computing, analogous to transistor switches in classical computing. Superconducting qubits are driven by microwave pulses to flip states, but shorter pulses make waveforms harder to shape cleanly, causing unwanted level leakage (the qubit jumping to unintended states) and phase errors (incorrect rotation angles). The traditional fix is to lengthen pulses and smooth the waveform, but this slows overall computation and limits achievable algorithm depth.
Origin's solution is 'parameter space extension': rather than lengthening the pulse, the team added tunable parameters to the waveform design, making pulses both short and accurate. What sounds like a detail adjustment is in fact a redesign of how the hardware layer 'compromises with quantum mechanics'.
Transferability Is the Real Story
The scheme's greatest value lies not in making superconducting qubits faster, but in its transferability. The Origin team explicitly notes the technique applies not only to superconducting systems but can migrate to ion traps, solid-state spins, and other technology routes, offering broad patent-licensing and industrialization potential.
In other words, this provides the whole quantum computing industry with a standard approach to gate-level optimization, not a trick exclusive to one hardware route. Compared to the same-day (August 17) Quanta Computer–Quantinuum partnership tackling the 'quantum engineering manufacturing wall', Origin's PSE-CZ represents a Chinese path at the level of fundamental gate precision.
The Real Industrial Numbers Behind Origin Wukong
As of publication, Origin Quantum's self-developed 'Origin Wukong' superconducting quantum computers have provided stable quantum computing services to 192 countries and regions worldwide, with over 52 million cumulative remote visits and more than 1 million completed computation tasks. This is not a paper-only result—it is an industrial-grade platform people actually use remotely.
Notably, 'Origin Wukong' currently carries 72 computational qubits. Achieving error control near the decoherence limit at 30–40 ns gate lengths means that as qubit counts push past 100, quantum error-correcting code distances can stay compact, and usable computing power grows exponentially.
Additionally, Origin's 'Origin Sinan' quantum computer operating system, released alongside, is the world's first quantum OS with an open online download channel, handling quantum resource scheduling, task coordination, and software-hardware adaptation.
What It Changes
The central axis of quantum computing competition is shifting from 'qubit counts' to a dual track of 'gate precision + engineering capability'. PSE-CZ's transferability gives China a genuinely industrializable position in fundamental gate-precision patents.
Three validation points to watch over the next 12 months: first, whether Origin Wukong's next-generation 100+ qubit machine adopts PSE-CZ and publishes quantum volume data; second, whether QuantumCTek, Origin Quantum, and Turing Quantum follow with similar 'parameter space extension' gate schemes; third, whether PRL peer review prompts international peers (including IBM, Google, Quantinuum) to respond with gate schemes of their own.
Patent filings are already underway. This marks another addition to China's reserves of fundamental quantum core patents—and the latest footnote to the 'measure accurately + build well' theme in the quantum race.