The Japanese firm Adamant Namiki Precision Jewel Co. and researchers from Saga College in Kyushu, Japan, have developed a brand new technique to mass-produce two inch (5 cm) wafers product of diamond.
Whereas utilizing diamonds is likely one of the most promising supplies for quantum computing techniques, an excessive amount of nitrogen in a diamond disrupts its quantum storage capabilities.
The novel ultra-high-purity diamond incorporates not more than three elements per billion of nitrogen atoms, as required for quantum purposes, corresponding to quantum computer systems, quantum reminiscence, and quantum sensing gadgets.
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The diamond wafers, referred to as Kenzan Diamond, may very well be used for quantum reminiscence because the ultra-high purity of the diamond permits it to retailer a whopping 25 exabytes, the equal of 1 billion Blu-Ray discs, of information.
Till now, usable diamond crystals have been solely about 4 millimeter sq.. It’s anticipated that this new expertise will result in the belief of quantum computer systems sooner or later.
Diamond wafers are manufactured by rising the crystals on a substrate materials, often a flat floor. In diamond crystal development expertise, nitrogen gasoline must be used to acquire a excessive development fee, so nitrogen impurities with a focus of a number of ppm are combined into the diamond crystal and can’t be utilized in a quantum laptop.
The principle drawback with this technique is that the diamond can crack underneath the pressure, degrading its high quality. Within the new technique, the workforce makes use of a substrate floor that’s formed like steps, which spreads the pressure horizontally and prevents cracking. This newly used floor permits them to make bigger diamond wafers with increased purity.
The analysis will likely be offered on the Worldwide Convention on Compound Semiconductor Manufacturing Expertise in Could.
Adamant Namiki plans to commercialize Kenzen Diamonds in 2023, whereas engaged on doubling the dimensions of the wafers.