Reimei, a hybrid quantum supercomputer developed by Quantinuum and housed at Riken, marks a significant milestone in quantum computing research. The machine utilizes trapped-ion qubits and will be primarily used for physics and chemistry research. Reimei's unique architecture and the potential for error correction techniques pave the way for the advancement of quantum computing.
Engineers in Japan have successfully switched on the world's first hybrid quantum supercomputer, named Reimei. Housed at the Riken scientific institute in Saitama, near Tokyo, this groundbreaking machine will primarily be utilized for physics and chemistry research, according to a joint statement released by Quantinuum , the manufacturer of Reimei, and Riken . \Reimei utilizes trapped-ion qubits, a distinct approach from the more common superconducting qubits.
This method involves isolating charged atoms, or ions, within an electromagnetic field. Engineers can then manipulate these ions to function as qubits, the fundamental building blocks of quantum information processing. Trapped ion qubits are known for their longer coherence times and the potential for stronger qubit-to-qubit connections, while superconducting qubits offer faster gate connections and easier fabrication on chips. \Quantum computers hold the promise of one day surpassing classical computers in computational power, potentially solving problems that would take today's most advanced machines millions of years to complete. While quantum computers are not yet large or reliable enough to fully realize this potential, advancements like Reimei represent significant strides towards that goal. Quantum computing research is rapidly progressing, with companies like Google demonstrating the capabilities of their quantum processors. Google's Sycamore quantum computer chip has recently been shown to outperform the fastest supercomputers in specific tasks, as indicated by a new study. Reimei's unique architecture physically moves qubits, which are inherently 'noisy' entities. To address this 'noise,' scientists are developing error-correction techniques to enhance the fidelity of qubits and enable the scaling of quantum computers. Reimei's physical ion qubits have been grouped to create 'logical qubits,' meaning a set of physical qubits that collectively store the same information in multiple locations. This distribution of information across different physical qubits acts as a safeguard against errors, as a failure in one qubit should not disrupt an ongoing calculation. While Reimei-Fugaku marks the first fully operational, integrated hybrid system, other companies have also explored similar architectures. IQM, for instance, integrated a 20-qubit quantum processor into a supercomputer in June 2024, although this system is still in the testing phase. IQM plans to further integrate a 54-qubit system by the latter half of 2025 and a 150-qubit chip in 2026.
Quantum Computing Supercomputer Japan Hybrid System Trapped-Ion Qubits Riken Quantinuum
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