Docstoc

The Next Generation Of Computers Is Quantum Computers (PDF)

Document Sample
The Next Generation Of Computers Is Quantum Computers (PDF) Powered By Docstoc
					Title:
The Next Generation Of Computers Is Quantum Computers.


Word Count:
617


Summary:
Taking the Quantum Leap


While it may seem that the evolution of computers is about at its end, that is not the case. The next
generation of computers is quantum computers.


The reason behind continuing computer evolution is the continuing thirst we have for speed and capacity of
our computers. Way back in 1947 an engineer and computing expert, Howard Aiken, predicted that all the
United States need to satisfy its need for computers were six digital electronic computers. ...



Keywords:
computers,internet,online,business,pc,laptops,laptop,notebooks,notebook,cases



Article Body:
Taking the Quantum Leap


While it may seem that the evolution of computers is about at its end, that is not the case. The next
generation of computers is quantum computers.


The reason behind continuing computer evolution is the continuing thirst we have for speed and capacity of
our computers. Way back in 1947 an engineer and computing expert, Howard Aiken, predicted that all the
United States need to satisfy its need for computers were six digital electronic computers. Other scientists
and engineers that followed Aiken added to the volume they predicted as being adequately massive, but
were also far too conservative.


What none were able to predict that scientific research would produce voluminous quantities of knowledge
that needed to be computed and stored, nor did they predict the popularity of personal computers, and the
existence of the Internet. In fact, it’s hard to predict if humankind will ever be satisfied with its computer
power and volume.


A basic computer premise, called Moore’s Law, says that the number of a microprocessor’s transistors
doubles every 18 months and will continue to do so. What this means is that by no later than 2030 the
number of microprocessor circuits found in computers will be astronomically high. This will lead to the
creation of quantum computers, whose design will use the power of molecules and atoms for processing and
memory tasks. Quantum computers should be able to perform specific calculations billions of times more
quickly than can the current computers that are based on silicon.


Quantum computers do exist today, though few and they’re all in the hands of scientists and scientific
organizations. They are not for practical and common use – that is still many years away. The theory of
quantum computers was developed in 1981 by Paul Benioff, a physicist with the Argonne National
Laboratory. Benioff theorized going beyond the Turing Theory to a Turing machine with quantum
capabilities.


Alan Turing created the Turing machine around 1935. This machine was made up of a tape whose length
was unlimited and which he divided into small squares. Each square either held the symbol one or the
symbol zero, or no symbol at all. He then created a reading-writing device that could read these zero and one
symbols, which in turn gave these machines – the early computers – the instructions that initiated specific
programs.


Benioff took this to the quantum level, saying that the reading-writing head and the tape would both exist in
a quantum state. What this would mean is that those tape symbols one or zero could exist in a superposition
that could be one and zero at the same time, or somewhere in between. Because of this the quantum Turing
machine, in contrast to the standard Turing machine, could perform several calculations at once.


The standard Turing machine concept is what runs today’s silicon-based computers. In contrast, quantum
computers encode computer information as quantum bits, called qubits. These qubits actually represent
atoms that work together to act as a processor and as the computer’s memory. This ability to run multiple
computations at one, and to contain several states at the same time, is what gives quantum computers the
potential to be millions of times as powerful as today’s best supercomputers.


Quantum computers that have 30 qubits would, for example, have processing power equal to today’s
computers that run at a speed of 10 teraflops (trillions of operations per second.) To put this in perspective,
the typical computer of today runs at gigaflop speeds (billions of operations per second.


As our cry for more speed and more power from our computers continues, quantum computers are predicted
to be a readily available product sometime in the not so distant future.




file backup
and collaboration
ct management

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:3
posted:3/24/2012
language:simple
pages:2
About Filocity brings together all of the the document and project management tools that you need to manage your business. An online pdf editor, convert to pdf and pdf bookmaker makes document management even easier than ever before. Upload forms and marketing pieces, fill out, digitally sign and share. An online bookmaker gives you the power to select documents, graphics and excel spreadsheets and create a pdf book or proposal to share with clients or prospects. The power of Filocity makes document and project management simple and affordable.