Scientists use 'voting' and 'penalties' to overcome errors in quantum optimization
Friday, February 7, 2014 - 16:01
in Physics & Chemistry
Seeking a solution to decoherence -- the "noise" that prevents quantum processors from functioning properly -- scientists have developed a strategy of linking quantum bits together into voting blocks, a strategy that significantly boosts their accuracy. In a new study, the team found that their method results in at least a five-fold increase in the probability of reaching the correct answer when the processor solves the largest problems tested by the researcher, involving hundreds of qubits.