{"id":20154,"date":"2026-10-02T12:15:41","date_gmt":"2026-10-02T12:15:41","guid":{"rendered":"https:\/\/news.theck1.no\/?p=20154"},"modified":"2026-10-02T12:15:41","modified_gmt":"2026-10-02T12:15:41","slug":"random-access-quantum-memory-lets-one-processor-select-among-seven-storage-cells-2","status":"publish","type":"post","link":"https:\/\/news.theck1.no\/?p=20154","title":{"rendered":"Random access quantum memory lets one processor select among seven storage cells"},"content":{"rendered":"

AI-rewritten:<\/strong> This is a summary of an article from Phys.org, rewritten by AI (Qwen, running locally) to make it easier to read. The facts come from the original article – read it for the full story.<\/p>\n

Phys.org • September 25, 2026<\/strong><\/div>\n\n

Classical computers use random access memory (RAM) to let processors retrieve data from specific locations without searching through everything stored. Most superconductor-based quantum computers lack this feature because they currently rely on the same hardware for both processing and storage. To solve this, researchers at Stanford University, the University of Chicago, and SLAC National Accelerator Laboratory designed a new device that acts as random access quantum memory. This design allows a single processor to select among seven separate storage cells without needing individual wiring for each one.<\/p>\n

<\/p>\n

The team’s device includes four main parts: a transmon for computing, a multimode aluminum cavity with seven modes acting as memory cells, a buffer cavity, and a tunable coupler. The buffer sits between the processor and the memory to prevent strong interactions that usually corrupt stored data. To read or write information, researchers apply a control tone at a specific frequency, which swaps the quantum state from a chosen cell into the buffer for processing. This swap takes about half a microsecond, while the other six cells remain untouched.<\/p>\n

In tests, the team accessed the seven memory cells thousands of times and found that each operation introduced an average error of about 1.2%. They discovered that unwanted interactions between the modes were a major source of this error, as operating on one cell slightly nudges the others out of step. Despite these errors, the individual swaps ran at roughly 99.3% fidelity. The researchers note that if memory is the only source of error, existing error-correction techniques could manage it. Their work suggests that separating memory and processing could make scaling quantum computers more practical by reducing the need for extra control hardware.<\/p>\n

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Source:<\/strong> Phys.org • September 25, 2026<\/p>\n

Read the original article at Phys.org →<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

AI-rewritten: This is a summary of an article from Phys.org, rewritten by AI (Qwen, running locally) to make it easier to read. The facts come from the original article – read it for the full story. Phys.org • September 25, 2026 Classical computers use random access memory (RAM) to let processors retrieve data from specific<\/p>\n

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