High-purity diamonds might be used as a storage medium in quantum computers
Pure Diamond 25,000,000 TB Storage Capacity Commercially Available Next Year
In 2023, the new technology will be implemented commercially
Quantum computing has the potential to revolutionize a wide range of industries, including chemistry, cryptography, finance, and health, to mention a few. According to physicists, quantum computers maybe thousands of times quicker than conventional computers when compared to their predecessors. To take advantage of this capability, scientists are now researching strategies for building networks of quantum computers. The functioning of these networks will rely heavily on a fault-tolerant quantum memory, which is capable of responding rapidly to hardware or software failures. Researchers at Yokohama National University are considering the possibility of developing quantum memory that is immune to both operational and environmental mistakes.
The invention of a revolutionary technique has permitted the creation of enormous, ultrapure diamonds, which have the potential to be employed as a storage media for quantum computers.
Tokyo is Japan’s capital city (Japan). Despite their little size, quantum computers are very powerful. To make good use of the systems, however, a substantial quantity of storage capacity is necessary. As a consequence, scientists have devoted a great deal of time and energy to the hunt for appropriate materials to safeguard the massive volumes of data created by quantum computers. In collaboration with the Adamant Namiki Precision Jewel Company, experts at Saga University have created a novel solution to the issue.
To construct a quantum computer using superconducting qubits, scientists must operate in a magnetic field of zero or less strength. The research team explored the nitrogen-vacancy centres in diamonds as part of its attempts to push the technology toward a fault-tolerant quantum computer. Nitrogen-vacancy centres have the potential to be used in several applications, including quantum computing. Using a diamond nitrogen-vacancy core with two nuclear spins of the surrounding carbon isotopes and two nuclear spins of the surrounding carbon isotopes, the researchers corrected quantum errors in quantum memory. In the absence of a magnetic field, a three-qubit quantum error correction was tested against a bit-flip and a phase-flip error, and the findings were positive. When the magnetic field shifts, errors such as bit-flipping and phase-flipping may occur. According to the researchers, a three-dimensional coil was used to cancel out any residual magnetic field, including the geomagnetic field, to achieve a zero magnetic field. This quantum memory has been configured with error correction, so it will automatically repair errors as they occur.
The Adamant Namiki Precision Jewel Company is renowned for its work, among other things, in the fabrication of precision instruments constructed from diamonds and other precious stones. Together with Saga University, the business has manufactured a huge, transparent diamond that has established new world records.
Diamonds must be exceedingly pure for quantum computers to use as a storage medium. They must also contain no more than three parts per billion (ppb) of nitrogen or three nitrogen atoms per billion carbon atoms. It was previously possible to make diamond wafers with this clarity only up to a maximum size of four millimetres in diameter. They were insufficient in quantity to be of use.
“The quantum error correction makes quantum memory resilient against operational or environmental errors without the need for magnetic fields and opens a way toward distributed quantum computation and a quantum internet with memory-based quantum interfaces or quantum repeaters,” - said Hideo Kosaka, a professor at Yokohama University and lead author on the study.
Consequently, experts at Adamant Namiki Precision Jewel Company and Saga University have developed a novel manufacturing technique that can produce a diamond wafer measuring 5.08 centimetres in diameter and containing less than three parts per billion of nitrogen. The technique is currently being tested.
With the help of revolutionary manufacturing technology, diamond wafers are formed on the surface of a sapphire substrate with a stepped structural design. As diamond crystals grow, the slope of the structure allows the crystals to spread out as they grow. Fractures and sprains are reduced as a result, and the overall quality is improved. In addition, the engineers reduced the amount of nitrogen gas used in the process to improve the purity of the diamond. Nitrogen gas has traditionally been used to enhance the pace of crystal formation in conventional techniques.
Scientists believe that the diamond can store around 25 exabytes of data. This is equal to one billion Blu-Ray discs in terms of capacity. Towards the end of 2023, Adamant Namiki Precision Jewel Company plans to market the new manufacturing technology.
In the future, a variety of disciplines, including chemistry, cryptography, finance, and medicine, stand to gain significantly from quantum computing. When hardware or software failures occur, fault-tolerant quantum memory will play a crucial role in ensuring the continued operation of these networks. Yokohama National University may produce quantum memory that is impervious to operational and environmental faults. Japanese scientists from Yokohama National University have shown the operation of a quantum computer in the absence of a magnetic field. Quantum memory error correction was achieved by using two nuclear spins of the surrounding carbon isotopes and two nuclear spins of the surrounding carbon isotopes. It is possible to construct a large-scale distributed quantum computer and a long-distance quantum communication network using this technology.
- High-purity diamonds may be used as storage mediums for quantum computers.
- However, they have not yet been manufactured in significant quantities.
A new manufacturing procedure can now generate a huge, high-purity diamond. - The new manufacturing technique will be commercialized in 2023.
