Collaboration between quantum computer 'Reimei' and supercomputer 'Fugaku' begins, the world's first hybrid quantum supercomputer



Quantinuum, a quantum computer company based in Colorado, USA, and the RIKEN Institute, the National Research and Development Agency that owns the supercomputer 'Fugaku ,' announced on February 12, 2025 that they have completed the installation of Quantinuum's quantum computer 'Reimei.' Going forward, Reimei will work with Fugaku to tackle scientific challenges.

Quantum computer 'Reimei' now in full operation at RIKEN, ushering in a new era of quantum hybrid high-performance computing - The quantum computer 'Reimei', installed at RIKEN's world-class facility, will lead the advancement of quantum computing technology in physics, chemistry and other application fields - | Quantinuum - Quantinuum Inc.
https://quantinuum.co.jp/20250212-2/

Quantum computer 'Rimei' now in full operation at RIKEN, opening up a new era of quantum hybrid high-performance computing | RIKEN
https://www.riken.jp/pr/news/2025/20250212_1/index.html

World's 1st hybrid quantum supercomputer goes online in Japan | Live Science
https://www.livescience.com/technology/computing/worlds-1st-hybrid-quantum-supercomputer-goes-online-in-japan

'Fugaku,' which is operated at the RIKEN Center for Computational Science in Kobe, Hyogo Prefecture, is the sixth fastest supercomputer in the world at the time of writing, but it has previously swept the global performance rankings.

Japan's supercomputer 'Fugaku' takes first place in four world rankings - GIGAZINE



The Quantum Dawn, which was installed on February 12, 2025 at the RIKEN Wako Campus in Saitama Prefecture, is a 20-qubit trapped-ion quantum computer that can perform basic calculations with the highest precision of any current quantum computer by holding charged particles (ions) in an electromagnetic field.

Quantinum President and CEO Rajeev Hazra commented, 'The completion of this installation marks the first time our quantum technology will be operational outside the United States, and marks a crucial step in our global strategy. We believe that by providing access to our quantum technology to RIKEN's outstanding researchers, we will be able to contribute to achieving unprecedented scientific breakthroughs.'



Unlike most quantum computers that operate on 'superconducting qubits,' which are relatively easy to manufacture, Dawn employs an ion trapping method in which ions trapped in an electromagnetic field are controlled by a laser. By using trapped ions as qubits, the quantum computer can demonstrate more stable performance by increasing the number of connections between qubits and lengthening the coherence time , which is the time during which qubits remain stable in superposition or entangled states.

Quantinum's quantum computer was chosen as a partner for Fugaku because it can flexibly execute complex algorithms using the 'ion shuttle' that physically moves quantum bits.

In quantum computers, where calculation errors due to noise are an issue, error correction technology that improves the 'fidelity' of quantum bits is essential. Therefore, Quantinum has succeeded in reducing the error rate to 1/800 of that of conventional physical quantum bits by grouping ion quantum bits into 'logical quantum bits'.

Microsoft and Quantinuum announce development of next-generation technology that reduces 'noise' that causes huge errors in quantum computing by 800 times - GIGAZINE



Mitsuhisa Sato of the RIKEN Center for Computational Science commented, 'We believe that Reimei's low error rate and full connectivity will greatly expand the research possibilities of our quantum high-performance computing (HPC) hybrid platform. We hope that by linking Quantinum's quantum computer Reimei with Fugaku, we will be able to break new ground in scientific research.'

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in Hardware,   Science, Posted by log1l_ks