Researchers in Japan have developed a new method for making diamond plates with a diameter of 5 cm, which can be
Diamond is one of the most promising materialsfor practical quantum computing systems. A specific defect in the crystal, known as a nitrogen-substituted vacancy in diamond, allows it to be used for data storage in the form of superconducting quantum bits (qubits). But when there is too much nitrogen in a diamond, it disrupts its quantum storage capacity.
To solve the problem, scientists had tocreate either huge diamond wafers with too much nitrogen, or ultra-clean diamond wafers that are too small to be used for data storage. Now researchers from Saga University and Adamant Namiki Precision Jewelery Co. Japan has developed a new method for producing ultra-high purity diamond wafers whose size is suitable for practical use.
They are now made by growingcrystals on the substrate material. In the new process, its surface was made into steps, which distributes stress horizontally and prevents cracking. The nitrogen concentration in these plates is less than three parts per billion (ppb), making them incredibly clean. These are currently the largest plates with this level of purity.
Using this technique, diamonds are obtainedthe platters are 5cm across and have such a huge data density that they could theoretically store the equivalent of a billion Blu-Ray discs. A single Blu-Ray can store up to 25GB (assuming it's single-layer), meaning a diamond platter must store 25 exabytes (EB) of data. The company named its inserts Kenzan Diamond.
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