Sign In

Communications of the ACM

ACM TechNews

IBM Researchers Demonstrate the Advantage Quantum Computers Have Over Classical Computers


View as: Print Mobile App Share: Send by email Share on reddit Share on StumbleUpon Share on Hacker News Share on Tweeter Share on Facebook
A Google quantum computer (top) and a classical computer.

IBM researchers have proven in a real-world experiment that quantum computers are superior to classical devices.

Credit: Google Quantum Computers/itechhacks

Scientists at IBM have proved quantum computing's superiority to classical computing in miniature, via a microscopic experiment with limited available memory.

The researchers built two limited-space circuits—one quantum and one classical—with just one bit or quantum bit for computation and result storage; the circuits were programmed to find the majority out of three input bits, yielding zero if over half are zero, and one if over half are one.

The IBM team theorized the classical system could not run the algorithm, and it could only complete the task 87.5% of the time even with random Boolean gates added.

The quantum system did not achieve the 100% theoretical success rate, but still beat the classical system with a 93% success rate in the experiment.

The researchers said the experiment is a world-first demonstration of quantum advantage.

From DNet
View Full Article

 

Abstracts Copyright © 2021 SmithBucklin, Washington, DC, USA


 

No entries found

Sign In for Full Access
» Forgot Password? » Create an ACM Web Account