Sophistication has progressed as people have learned new ways to develop various physical resources such as materials, forces, and energies. The history of computer technology has involved an order of changes in physical understanding, from gears and relays to valves, transistors and integrated circuits, and so on. Today's advanced lithography methods can squeeze micron-wide portions of logic gates and buses onto the surface of silicon chips. Soon they will carry even smaller parts and will eventually get to the point where logic gates are so small that they are made up of a handful of atoms. At the atomic level, matter adheres to the rules of quantum mechanics, which are different from conventional rules. which govern the properties of orthodox logic gates. So if computers are built smaller in the future, quantum technology will have to replace or improve on what we have now. Quantum technology can offer much more than putting more bits into silicon and increasing the clock speed of microprocessors. It can support a completely new type of computation with advanced algorithms based on quantum principles. Quantum computing is a significant section of the rapidly evolving new field of quantum information processing and communication. This field deals with computer science representations and approaches, algorithms, communication procedures, innate complexity considerations, encryption protocols, and so on, for situations in which quantum objects, and not traditional ones, are carriers of information. Research in In quantum information processing, faster algorithms have already been provided for some important algorithmic problems, but not for all such problems; Fundamentally new encryption... half paper... takes a long time on conventional computers. There are many difficulties that must be overcome before we can begin to appreciate the benefits they can provide. Researchers around the world compete to be the first to build an applied system, a feat some scientists say is futile. David Deutsch, one of the scientists in the field of quantum computing, said himself: "Perhaps, their most profound effect could turn out to be theoretical." Can we really build a useful quantum computer? Who knows; in a quantum world, anything is possible! Works Cited “Quantum Computers.” ewh.ieee.org. ieee and Web. 7 November 2011. Gruska, Jozef. "Quantum computing". Wiley Encyclopedia of Computer Science and Engineering (2009): March 16, 2009. Web. November 12, 2011. Smite-Meister. "Bloch_Sphere." January 30th. 2009.