Japan, which was once synonymous with technology, has been a bit behind in recent years, however, this seems to be changing, the Asian country has just activated a hybrid quantum supercomputer, called Reimei, this 20-cubit quantum computer has been integrated with Fugaku, the sixth fastest supercomputer on the planet.
This fusion of technologies combining a traditional supercomputer with a quantum one promises to accelerate calculations that would take millions of years to solve, unlike most quantum computers that use superconducting qubits. Reimei relies on trapped ion qubits, which offers significant advantages, greater stability and control. Trapped ion qubits are less susceptible to external interference, longer coherence times, qubits maintain their state for longer allowing more precise calculations and improved connectivity, this technology makes more sophisticated interactions between the qubits.
This approach uses a method called ion shote in which qubits are physically moved within the circuit to optimize calculations, allowing for a much higher level of control and precision compared to conventional quantum computing systems.
Fugaku is an extremely powerful traditional supercomputer, but it even has computational limits when faced with extremely complex calculations. The solution is to integrate a hybrid system that combines the speed of traditional computing with the power of quantum mechanics. The goal is to create a machine capable of solving problems in physics, chemistry and artificial intelligence with efficiency never seen before.
Quantum computing has always faced a big problem: qubit errors. They are extremely sensitive to external disturbances, which can compromise entire calculations. To avoid this, Reimei uses logical qubits by grouping multiple physical qubits to store the same information. This approach reduces errors and makes calculations much more reliable.
Quantinuum, the company responsible for Reimei, had already developed a logical qubit that is 800 times more precise than conventional physical qubits, this means that we are getting closer to truly scalable quantum computers. Reimei fugaku is the world's first fully operational hybrid quantum supercomputer.
Other companies are also testing this technology such as IKM which in 2024 connected a quantum processor to Germany's super M&G they plan to launch a 54 qubit system this year and a 150 qubit system in 2026, but it is still in the testing phase, if Japan and other nations continue to evolve this technology the impacts could be revolutionary, medical discoveries faster advances in physics and chemistry and super advanced artificial intelligence.
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