NIST researchers have discovered that quantum information transfer in quantum computers is limited by a power law relationship, rather than a logarithmic one as previously believed. This means quantum processors will work more slowly than some research suggested, but the findings provide a tighter constraint on the speed limit for quantum information transfer.
The study advances a line of research dating back to the 1970s, when scientists discovered a limit on how quickly information could travel in quantum systems. The new findings suggest that while quantum computers may be able to solve certain problems more easily than classical computers, their processors will not be speed demons.
The research could help engineers design more realistic quantum computers and provide a better understanding of how entanglement works in quantum systems.
Source: https://www.nist.gov/news-events/news/2015/04/nist-tightens-bounds-quantum-information-speed-limit
Keywords: Information, quantum, spin, entanglement, particle
