IBM presented a series of significant innovations in quantum technologies at the Quantum Developer Conference 2025. The main highlights included the Nighthawk quantum processor, the experimental Loon model, and updates to the Qiskit stack, all aimed at achieving quantum advantage and advancing fault-tolerant quantum computing.
This is reported by Business • Media
Nighthawk Quantum Processor: Features and Goals
The IBM Quantum Nighthawk is positioned as one of the company’s most advanced quantum processors, equipped with 120 qubits interconnected by 218 tunable couplers. This architecture allows Nighthawk to execute computational circuits that are 30% more complex compared to its predecessor — the IBM Quantum Heron.
The processor currently supports up to 5000 two-qubit gates, and in the coming years, IBM plans to significantly increase this number: to 7500 by the end of 2026, 10,000 by 2027, and 15,000 by 2028. The expansion of the qubit network through long-range couplers will enable interaction between even distant qubits, enhancing the system’s flexibility and performance.
“In this regard, IBM expects to achieve quantum advantage by the end of 2026. This term refers to the moment when a quantum computer can perform calculations that are unattainable for supercomputers.”
As part of its roadmap for the development of quantum technologies, the company has also updated the Qiskit software stack. Among the improvements are a 24% increase in the accuracy of dynamic circuits for processors with 100 or more qubits, the introduction of a new execution model, and a C-API that facilitates the integration of high-performance tools for rapid error correction and significant cost reduction in this process. The added support for C++ allows programmers to develop quantum algorithms in familiar environments, and by 2027, IBM plans to include libraries for machine learning and optimization.
Loon Model: A Step Towards Fault-Tolerant Quantum Computing
To achieve fault-tolerant computing by 2029, IBM introduced the experimental Loon quantum processor. Its architecture involves the implementation of additional conductors on the chip to ensure connectivity between distant qubits, which is crucial for creating scalable and reliable quantum circuits. Loon will serve as a platform for testing quantum error correction in real-world conditions, allowing for the examination of qubit interactions in complex systems.
IBM has also demonstrated that classical computers can be effectively used to search for and correct errors in quantum systems in less than 500 nanoseconds, thanks to the implementation of new qLDPC codes.
The development of the Nighthawk and Loon processors is taking place at the Albany NanoTech Complex, one of the most advanced semiconductor manufacturing centers in the world. The release of the Nighthawk processor for clients is expected by the end of 2025.
Thus, IBM continues to strengthen its position in the quantum computing market by implementing technologies that could significantly impact the future of data processing and the development of the digital industry.