Communications of the ACM
Paving the Way for a Faster Quantum Computer
Credit: Before It's News
University of Vienna researchers have demonstrated a new quantum computing technique in which operations occur without a well-defined order. The researchers used this effect to accomplish a task more efficiently than a standard quantum computer. The researchers say the breakthrough could lead to a new form of quantum computing, potentially providing quantum computers with an even larger computational speed-up.
The researchers realized that superimposing the order of quantum gates could be implemented in the laboratory, enabling them to know if one operation occurred before another operation, and vice versa. The results of the experiment prove it is impossible to determine which quantum logic gate acted first. "In fact, we were able to run a quantum algorithm to characterize the gates more efficiently than any previously known algorithm," says University of Vienna researcher Lorenzo Procopio.
From a single measurement on a photon, the researchers probed a specific property of two quantum gates applied to the photon, thereby confirming the gates were applied in both orders at once; in addition, as more gates are added to the task, the new method becomes even more efficient compared to previous techniques. The study represents a new way to connect theoretical research on the foundations of physics to experimental quantum computing.
From University of Vienna
View Full Article
Abstracts Copyright © 2015 Information Inc., Bethesda, Maryland, USA
No entries found