April 14, 2015 – NIST Tightens the Bounds on the Quantum Information ‘Speed Limit’

NIST scientists prove that the propagation time of entanglement between two distant particles for sharing data across a quantum system grows only as a power of the system size instead of logarithmically. The finding implies that quantum processors will be slower than previously predicted. (Posted by Ed. Perkins, Y. Tzeng)