Quantum Computing may be a wide selection of areas of computing focused on developing technology supported by the principles of Computer. It explains the behavior of energy and material on the atomic and subatomic levels.
In today we use Classical computers that we used today only to encode information and data in bits that take the worth of 1 or 0. It performs the calculations based on the probability of the current behavior or state of the object. It does not only uses 1 or 0. It has more power to process larger amount of data rather than the small capacity of the traditional computers. It is the use of the quantum phenomenon such as superposition and entanglement to perform the computations.