Quantum Computers differ from the computers we have today in a way where today's computers work with bits with values of either a 0 or a 1. However, Quantum Computers are said to use a qubit which can have a value anywhere between 0 and 1. Quantum Computers are believed to excel past the computers we have today in a way where computers today "think one thought at a time" where a Quantum Computer can "think several thoughts simultaneously." However, the problem with Quantum Computers is that it requires the polarization of nuclear spin which is a tough feat tough to overcome at room temperature. However, Linköping University researchers created a spin filter which overcomes this problem. The spin filter lets electrons through that only have the desired spin, which in effect polarizes the nuclear spin. Not only does this filter bypass the room temperature problem but it also leads to the ability for information to be read.
Computers today already seem efficient and compact enough for our daily lives but it seems that we still have a ways to go. The Quantum Computer may be the next step towards an even more efficient/smarter computer in this computer time period.
article: http://www.sciencedaily.com/releases/2013/04/130430092420.htm
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