Fujitsu and RIKEN have launched a 256-qubit quantum computer that significantly enhances computational capability compared to its 64-qubit predecessor. This advancement, made possible by high-density implementation techniques, opens new avenues for practical quantum technology applications. The new machine addresses thermal challenges by optimizing cooling within a dilution refrigerator, allowing the enhanced qubit system to use the same cooling unit as before. Furthermore, its innovative 3D interconnection design facilitates scaling and sustains an ideal balance between heat generation and cooling, ensuring optimal performance. The system is set to be accessible globally by July.
Fujitsu and RIKEN have successfully scaled their quantum computing capabilities by jointly developing a 256-qubit quantum computer, which quadruples computational power over its 64-qubit predecessor.
One of the major challenges tackled is the cooling of the dilution refrigerator, allowing all 256 qubits to function in the same cooling unit used for the previous system.
The 3D interconnection structure allows for efficient scaling and maintains the designs from the earlier model, assuring seamless advancements in quantum technology development.
With a focus on balancing heat generation from control circuits and cooling, the system operates under the ultra-high vacuum and low temperatures necessary for optimal performance.
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