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article imageQuantum computing: 10 billion times more tolerant to errors

By Tim Sandle     Jun 1, 2018 in Science
Japanese Scientists have developed a theoretical approach to quantum computing that is 10 billion times more tolerant to errors than current theoretical models.
The new development along the path to realizing a fully functioning quantum computer comes from the International PR Division of Hokkaido University in Japan (with the research supported by the ImPACT Program of Council for Science, Technology and Innovation). The news relates to a different theoretical approach to quantum computing, which is described as being 10 billion times more tolerant to errors when compared with existing theoretical models.
According to the researchers, this alternate approach brings the research into quantum computers closer to to fruition. The theoretical approach draws the technology of applying the diverse properties of subatomic particles in order to transmit, process and store very large amounts of complicated data.
One area of quantum computing research is to look at the properties in photons of light, which can be used for encoding information as quantum bits into a light beam. Photons move at the speed of light, and retain quantum correlations extremely well as long as they are not absorbed. This is achieved by digitizing patterns of an electromagnetic field. A stumbling block is that encoded information can disappear from the light waves, resulting in computational errors. To overcome this, the Japanese researchers have been experimenting with “squeezing” light in order to eliminate tiny quantum-level fluctuations (or 'noise') from the electromagnetic field.
The experimental model of light squeezing has been assessed as ten billion times more resistant to to errors compared with other methods. This means this approach should be able to tolerate just one error every 10,000 calculations.
The new theory has been published in the journal Physical Review X. The research paper is titled "High-Threshold Fault-Tolerant Quantum Computation with Analog Quantum Error Correction."
In related quantum computing news, a number of educational institutions are beginning to offer courses in quantum computing. This is something seen by both educators and employers as important for building the workforce of tomorrow. See Digital Journal's article "Now's the time to invest in quantum computing skills."
More about quantum computing, computer error, Computers
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