The massive amount of processing power generated by computer manufacturers has not yet been able to satisfy our need for speed and computing capacity. According to Moore's Law the number of transistors on a microprocessor continues to double every 18 months. So next generation computers will be quantum computers, which harness the power of atoms and molecules to perform memory and processing tasks. Quantum computers have the potential to perform certain calculations billions of times faster than any silicon-based computer. Paul Benioff was the first person who applied the quantum theory to computers in 1981and it was based on Turing Theory. Today's computers, like a Turing machine, work by manipulating bits that exist in one of two states: a 0 or a 1. Quantum computers are not limited to two states; they encode information as quantum bits, or qubits. A qubit can be a 1 or a 0, or it can exist in a superposition that is simultaneously both 1 and 0 or somewhere in between. Qubits represent atoms that are working together to act as computer memory and a processor. Because a quantum computer can contain these multiple states simultaneously, it has the potential to be millions of times more powerful than today's most powerful supercomputers. This superposition of qubits is what gives quantum computers their inherent parallelism. Quantum computers also utilize another aspect of quantum mechanics known as entanglement. In quantum computers when you try to look at the subatomic particles, you could bump them. So their value changed. But in quantum physics, if you apply an outside force to two atoms, it can cause them to become entangled, and the second atom can take on the properties of the first atom. So if left alone, an atom will spin in all directions; but the instant it is disturbed it chooses one spin, or one value; and at the same time, the second entangled atom will choose an opposite spin, or value. We can use this to know the value of the qubits without actually looking at them, which would collapse them back into 1's or 0's.Other major advantage is not like the Binary Logic, the Quantum Logic is reversible. Currently the technology required to develop such a quantum computer is beyond our reach because most research in quantum computing is still very theoretical. Hope one day quantum computers will replace the silicon based computers.