Quantum Computing

A quantum computer is a computation device that makes direct use of quantum mechanical phenomena, to perform operations on data. Quantum computers are not based on transistors. Quantum computers use quantum properties to represent data and perform operations on this data. many national government and military funding agencies support quantum computing research to develop quantum computers for both civilian and national security purposes, such as cryptanalysis.In simple words, Quantum computing merges two fields, computer science and quantum mechanics, for solving computational problems. It uses unique quantum mechanical system properties for this purpose. A quantum computer maintains a sequence of qubits while a classical computer has a memory made up of bits, where each bit represents either a one or a zero. A single qubit can represent a one, a zero, or any quantum superposition of these two qubit states. A quantum computer operates by setting the qubits in a controlled initial state that represents the problem at hand and by manipulating those qubits with a fixed sequence of quantum logic gates.