Physicists at Germany's University of Bonn and the Technion-Israel Institute of Technology have investigated the determinants of quantum-computer information processing speed. The researchers theoretically deduced the minimum time for quantum gates to transform the wave function and the information contained.
Technion's Gal Ness said the team "used fast light pulses to create a so-called quantum superposition of two states of [a cesium] atom. Figuratively speaking, the atom behaves as if it had two different colors at the same time."
The atom clones were compared at intervals via quantum interference to ascertain when a significant change of the matter wave transpired. Technion Professor Yoav Sagi said the results indicated the minimum wave-change time shortens as energy uncertainty increases, and demonstrated a speed limit imposed by the atom's average energy.
From The Jerusalem Post
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