Google's new achievement in quantum computing; The distance to commercial application is still long

Source link: Google's new achievement in quantum computing; The distance to commercial application is still long. At a glance, Google says that the "magic mode breeding" method has reduced errors in the Willow chip by about 40 times. The test used a maximum of 54 qubits of the chip's total 105 qubits, and only about 8 percent of attempts passed all checks. This is a research achievement, not an income generating event; Google also […] Source site: Safir Arjan

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Google says it has found a way to make the production of one of the most expensive resources required for quantum computers much more efficient; But this technology is still in the laboratory stage and is far from reaching practical production.

In a paper published in the journal Science and also in a blog post Thursday, Google's quantum artificial intelligence team described a method that the company says reduces errors in a key resource for quantum computing by about 40 times. This achievement is a step toward building error-correcting quantum computers, but it still does not make them a near reality in the near future.

This method focuses on "magic states"; A special type of quantum state that quantum computers need to perform the full range of calculations they require. Producing high-quality magic mods has always been very expensive. Some estimates say that their production may consume up to 95% of the capacity of a device.

Google's method, which is called "Magic Mode Cultivation", was first proposed in 2024 by the company's researchers, but before that it was only investigated in theory and simulation. In this method, a raw magic state is first built in a small part of the chip, and then error checks are performed repeatedly. Any attempt found to be defective will be discarded.

Google says this method on the Willow chip reduced errors by about 40 times compared to modes generated without it, and produced magic modes with 99.99 percent fidelity.

The significance of this result lies in the increased efficiency: if magic states can be produced more cheaply and reliably, more of the capacity of future quantum computers will be devoted to performing real calculations. This can reduce the size and cost of devices needed to solve practical problems.

However, the limitations of the experiment are significant. The study used a maximum of 54 qubits of the Willow chip's 105 qubits, and only about 8 percent of attempts to grow the magic state passed all checks. Google itself has also stated that the method needs to be tested on a larger scale and that many technical challenges remain. The company has not provided a timeline for commercial quantum computers.

This achievement also raises the debate about the possible dangers of quantum computing for encryption; Including cryptography that protects Bitcoin and online banking. However, such a risk is out of reach for now: breaking the widely used RSA-2048 encryption requires magic tricks that are about a million times cleaner than Google's hand-crafted ones.

For investors, this news is more of a research milestone than a revenue-generating event. So it's unlikely to change the outlook for Alphabet, whose value relies heavily on search, cloud services and artificial intelligence. Still, the new achievement strengthens Google's position in the race to build error-correcting quantum computers. Headlines like these can typically cause more extreme swings in the stocks of smaller companies focused on quantum computing.

The next steps will be whether Google can show the method works on a larger scale and whether independent researchers confirm the results.