29 Apr '15, 1pm

IBM Solves Quantum Computing | EE Times via @eetimes

IBM Solves Quantum Computing | EE Times via @eetimes

There are two main types of errors that must be corrected in quantum computers—bit-errors (flipping a 1 to a 0 or a 0 to a 1) and phase-flip errors (which cause signals to subtract from each other instead of add). Unfortunately, it is very difficult to solve both these errors at once. To do so, IBM had to go to a square architecture—instead of a linear-array architecture like Google's, which according to IBM can only solve one of the problems or the other but not both. As a result, IBM's square array of four qubits is quadruple redundant, but it makes an error-free scalable quantum computer possible.

Full article: http://www.eetimes.com/document.asp?doc_id=1326468

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