Quantum leap forward for superfast computers
“To harness properly the potential of quantum computing, we need to know for sure that it works,” said Elham Kashefi of the univesrity’s School of Informatics, pictured.
Researchers have devised a system in which simple test calculations can be incorporated into more complex problems typical of those being tackled by such powerful technology.
To test their theory, scientists from the Universities of Edinburgh and Vienna, and Singapore University of Technology and Design were able to use short computations, for which the answers were known, to verify the accuracy of a small quantum computer.
The data used was encrypted into photons, so that the true data could not be read by the quantum computer’s server, allowing the test to be employed without risk of sensitive data being revealed.
The study was published in Nature Physics.
“Our approach in testing quantum machines is effective, which is a big step forward in developing these superfast, sophisticated devices, said Elham Kashefi.