Zuchongzhi 3.2

Zuchongzhi 3.2 is a superconducting circuits quantum computer operated by USTC in China. It has 107 physical qubits. It ranks 19 of 43 superconducting machines in this table by physical qubit count. 6 sourced specs are in the spec sheet. 1 published benchmark or milestone record are listed below, each marked by who measured it.

Also known as USTC 107-qubit processor

USTC's processor used for a distance-7 surface code memory that the authors report operates below the error correction threshold, published in Physical Review Letters in December 2025. The measured logical error suppression factor is 1.40, lower than the 2.14 reported for Google's Willow. The 107-qubit count comes from trade press, not the paper abstract.

Spec sheet

Technical details as the builder or a paper states them, each with its own source. A blank is a fact we could not source, not a zero. Fidelity and coherence figures are in the benchmark table below.

Spec	Value	Basis	Note	Source
Processor	Zuchongzhi 3.2: 107-qubit superconducting processor	Vendor reported	The 107-qubit count is stated in the July 2026 arXiv paper and in Quantum Computing Report coverage of the PRL result.	arxiv.org quantumcomputingreport.com
Qubit type	Frequency-tunable transmon qubits with tunable nearest-neighbor couplers	Vendor reported	From the supplementary appendix of an arXiv preprint by the same group (July 2026), not yet peer reviewed.	arxiv.org
Topology	Square lattice with tunable nearest-neighbor couplers	Vendor reported	Same appendix; a 65-qubit, 104-coupler sub-region was used for the logical CNOT experiment.	arxiv.org
Native gates	Single-qubit gates and CZ; all-microwave leakage reduction unit and reset	Vendor reported	The appendix names two-qubit CZ gates and all-microwave leakage reduction and reset protocols as part of the processor control.	arxiv.org
Cooling and environment	Dilution refrigerator; all-microwave leakage control reduces wiring density	Vendor reported	Quantum Computing Report summary; the paper abstract gives no temperature.	quantumcomputingreport.com
Predecessor	Zuchongzhi 3.0	Vendor reported	The paper cites the Zuchongzhi 3.0 PRL as an earlier characterization of the same processor family; USTC does not call 3.0 a predecessor.	arxiv.org

Milestone claims

Distance-7 surface code below threshold with all-microwave leakage suppression; logical error suppression factor 1.40(6) (PRL 135) (2025-12, peer reviewed) journals.aps.org quantumcomputingreport.com

Timeline

2025-12: Announced

Comparable superconducting machines

Closest in physical qubit count within the same technology. Counts of different qubit types are not interchangeable across technologies.

Machine	Operator	Qubits	Status
Rigetti Cepheus-1-108Q	Rigetti Computing	108	operational
Google Willow	Alphabet	105	operational
Zuchongzhi 3.0	USTC	105	operational
IBM Nighthawk	IBM	120	operational
IBM Eagle	IBM	127	decommissioned
University of Tokyo IBM Quantum System One	University of Tokyo	127	operational