Educational Technology

November 14, 2011

Quantum Computers, Part 2: Zeros and Ones, Both and Neither

Filed under: Educational Technology — admin @ 12:30 am

by David Vranicar, TechNewsWorld

When someone flips a coin, it will land on either heads or tails. In that sense, a coin is akin to classical computing. Information is stored in a string of 0s and 1s (a string, that is, of heads and tails). Together, the 0s and 1s form bits, and these bits, when aligned in certain sequences, dictate the functions that a machine is to perform, be it sending a text message or opening up Microsoft Word. Machines that use quantum technology, however, have a different type of bit. Unlike a conventional bit, a quantum bit, or “qubit,” has the physical properties of an atom. And because of atoms’ ability to be in dual states, a qubit can simultaneously be 0 and 1. So while conventional computers are governed by a rigid series of mutually exclusive 0s and 1s, a quantum computer is built with qubits that can be 0 and 1 at the same time. A qubit, in this sense, is a coin resting on its edge, capable of going either way and, as a result, performing at a higher level than conventional bits. “It provides a range of possibilities that usually aren’t possible,” he told TechNewsWorld.

http://www.ecommercetimes.com/story/Quantum-Computers-Part-2-Zeros-and-Ones-Both-and-Neither-73665.html

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