Technology and Scienceupdated 21m ago2 min read
IBM Unveils Quantum Nighthawk r3 With 520 Qubits, Plans 1,040-Qubit System in 2027
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Nighthawk r3 features 520 programmable qubits for larger, faster quantum computations. IBM plans to link two r3 processors in 2027 to form a 1,040-qubit system.
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Nighthawk r3 update
IBM announced Quantum Nighthawk r3 at its Quantum Developer’s Conference, aiming for a processor that can execute 10,000 quantum operations across 520 programmable qubits. IBM said it plans to connect two Nighthawk r3 processors in 2027 to create a system with 1,040 programmable qubits, while it also described Nighthawk r3 as having 2,034 physical qubits. IBM tied the update to its Nighthawk r2 performance, saying the company’s customers and research partners have executed more than 34 billion circuits using the processor.
Jay Gambetta, Director of IBM Research and IBM Fellow, said, "Useful quantum computing hinges on whether results can be delivered with accuracy and speed, both are fundamental," as IBM positioned the r3 roadmap toward more complex computations. IBM also said its Nighthawk r2 supports more than 7,500 quantum operations on 120 qubits and can deliver up to 100,000 samples per second, with the r3 architecture extending the same high-speed approach to larger systems.
Speed, resets, and fidelity
IBM described Nighthawk r2’s high-speed qubit resets as reducing the wait between circuit executions, with SiliconANGLE saying the wait period can be reduced from about 200 milliseconds down to roughly 25 nanoseconds. IBM said Nighthawk r2 can produce up to 100,000 samples per second while supporting accurate execution of more than 7,500 quantum operations across 120 qubits, and Ars Technica linked that speed to the ability to run algorithms without error correction even if output may not be optimal. IBM said it has already demonstrated key modular scaling technologies, including connecting two Nighthawk r1 processors using four l-couplers, and SiliconANGLE reported a 99.4% transfer fidelity in that demonstration.
Oliver Dial, IBM’s Vice President of Quantum Systems, said the operations performed with the couplers take about 100 nanoseconds, describing a speed comparable to certain operations inside the processors themselves. IBM also set a communications target, with SiliconANGLE stating the couplers are progressing toward a 99.9% fidelity goal as IBM prepares to scale to two r3 chips.
Toward fault tolerance
IBM said its Quantum Platform will bring quantum and classical computing together in a single managed environment, with SiliconANGLE describing users integrating quantum workflows directly with HPC and classical resources. IBM said the platform approach is meant to help coordinate tasks such as mitigation, decoding, control, and post-processing as quantum systems grow, and La Ecuación Digital framed the roadmap as advancing circuit size, execution speed, and quality of results. IBM said it expects Nighthawk r3 to preserve the square-grid connectivity architecture used by Nighthawk r2 while adding mechanisms to connect processors, and Sur Noticias said IBM presented these capabilities as objectives planned for 2027 rather than completed results.
WIRED reported that IBM’s advances with Nighthawk will contribute to Starling, a fault-tolerant quantum computer IBM aims to build by 2029. IBM also emphasized that scaling qubits alone does not guarantee usefulness, with Sur Noticias stating, "more qubits can increase possibilities, but they do not by themselves guarantee a computational advantage."