Nvidia positions itself as key partner in quantum computing with NVQLink

Nvidia unveiled NVQLink on October 28, 2025, an open architecture interconnect designed to connect quantum processing units (QPUs) with Nvidia’s GPU-accelerated supercomputers. CEO Jensen Huang compared it to the “Rosetta Stone” for quantum-classical interplay. What NVQLink actually does NVQLink delivers latency under 4 microseconds and throughput up to 400 Gb/s between GPUs and QPUs using RDMA over Ethernet. The system integrates with Nvidia’s existing CUDA-Q software platform and works across multiple quantum hardware approaches: superconducting qubits, trapped-ion systems, and photonic architectures. Each connected NVQLink system can deliver up to 40 petaflops of AI performance at FP4 with sparsity. Quantinuum’s Helios QPU achieved real-time quantum error correction decoding 32 times faster than standard requirements when connected through NVQLink to an Nvidia GH200 Grace Hopper Superchip. The system posted a reaction time of just 67 microseconds and improved logical-qubit error rates by 5.4 times for an 8-logical-qubit memory. Adoption is already underway By November 17, 2025, less than three weeks after the announcement, more than a dozen supercomputing centers globally had st...