Working with university researchers, a Japanese jewelry company has developed a new production method to create 2-inch diamond slices that could soon be used in quantum computers.
Adamant Namiki Precision Jewelry has collaborated with Saga University of Kyushu to create its new “Kenzan Diamonds” which are pure enough for use in quantum computing. Although there are diamond wafers with the required purity, they have until now been too small (no larger than a 4mm square) to be used in quantum computing applications.
According to a press release issued by Adamant Namiki, previous attempts to grow 2-inch diamond slices failed due to having higher levels of nitrogen impurities. Luckily, the Japanese jewelry firm has come up with a new technique that makes it possible to grow large slices of diamond with fewer impurities.
Instead of using diamond micro-needle seeding, the new technique from Adamant Namiki and Saga University grows diamond slices on a sapphire substrate coated with an iridium film using the principle of “step flow growth”. The substrates used by this new technique along with the stepped structure allow the diamonds to be grown at high temperatures and pressure without any stress cracking during cooling while minimizing nitrogen uptake.
Diamonds for quantum storage
While traditional computers use processors made from silicon chips, researchers have started experimenting with diamonds as a substitute for silicon because they are the hardest material on Earth and also a good conductor of heat.
In this case however, Adamant Namiki’s Kenzan diamonds could be used for quantum storage applications due to their size and low nitrogen content. Using one of the company’s new diamond wafers for quantum storage, up to a billion Blu-Ray discs of data could be stored on an incredibly small 2-inch form factor.
Although Adamant Namiki has announced plans to release its Kenzan diamond wafers next year, the company has already begun work on developing 4-inch diamond wafers that could hold even more data.
At a time when companies are returning to tape storage to help fend off ransomware attacks, it’s interesting to see new materials like diamonds being considered for storage needs of the future.
Via Tom’s Hardware