Fundamental Quantum Limit on Computing Speed of Any Information Processing System

The Next Big Future:

Physicists Lev Levitin and Tommaso Toffoli at Boston University in Massachusetts, have calculated a quantum speed limit on computing.

In a paper published in the journal Physical Review Letters, Levitin and Toffoli present an equation for the minimum sliver of time it takes for an elementary quantum operation to occur. This establishes the speed limit for all possible computers. Using their equation, Levitin and Toffoli calculated that, for every unit of energy, a perfect quantum computer spits out ten quadrillion more operations each second than today's fastest processors.

(A quadrillion is 10^15 or 1000 trillions)

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