The chip remains in its early stages, and it is not yet known when outsiders can test it
[SAN FRANCISCO] International Business Machines (IBM) announced on Wednesday (Nov 12) that it has built a new experimental quantum computing chip called Loon.
It is a key milestone for IBM, which is on a quest to build useful quantum computers before the end of the decade.
Quantum computers could someday solve problems that would take classical computers thousands of years. Due to the uncertain nature of quantum mechanics, though, the chips are prone to errors.
Correcting those errors is the key focus of tech giants such as Alphabet’s Google and Amazon, which are chasing quantum computers alongside IBM.
In 2021, IBM proposed a new way of doing error correction – adapt an algorithm for improving cellphone signals to quantum computing, and run it on a combination of quantum chips and classical computing chips.
Mark Horvath, a vice-president and analyst at research firm Gartner, told Reuters in an interview that the downside of IBM’s idea is that the quantum chips become harder to build, because they contain both basic building blocks called qubits and new quantum connections between them.
“It’s very, very clever,” Horvath said. “Now, they’re actually putting it in chips, so that’s super exciting.”
Jay Gambetta, director of IBM Research and an IBM fellow, said the key was tapping the Albany NanoTech Complex in New York, which houses the same chipmaking tools as the most advanced factories in the world.
Loon remains in its early stages, and IBM did not disclose when outsiders can test it. But the company also announced on Wednesday a chip named Nighthawk, that will be available at the end of 2025.
IBM believes Nighthawk could beat classical computers on some tasks by the end of next year, and is working with a group of startups and researchers to share its code openly, so that others can test those claims.
“We’re confident there’ll be many examples of quantum advantage,” Gambetta told Reuters.
“But let’s take it out of headlines and papers and actually make a community where you submit your code, and the community tests things, and they select out which ones are the right ones.” REUTERS
Decoding Asia newsletter: your guide to navigating Asia in a new global order. Delivered to your inbox. Free.
