Quantum computing is an area of computing focused on developing computer technology based on the principles of quantum theory (which explains the behavior of energy and material on the atomic and subatomic levels).Quantum computers are machines that uses the properties of quantum physics to store the data and  to perform computations. Classical computers, which include smartphones and laptops, encode information in binary “bits” that can either be 0s or 1s. In quantum computers, the basic units of memory is a quantum bit or qubit. Qubits are made for using physical systems, such as the spin of an electron or the orientation of a photon. eight bits is enough for a classical computer to represent any number between 0 and 255. But eight qubits is enough for a quantum computer to represent every number between 0 and 255 at the same time. A few hundred entangled qubits would be enough to represent more numbers than there are atoms in the universe.
Classical computers carry out logical operation using the definite position of physical states. These are usually binary, meaning its operations are based on one of two positions.

In a binary world consisting of ones and zeros, quantum computers would be like the Albert Einstein of computing, with extraordinary electronic brains capable of completing tasks that would be almost impossible for ordinary computers to handle. Quantum computing does not have its own programming code and requires the development and implementation of very specific algorithms. However, traditional computing has standard languages like Java, SQL and Python, to name. The field of quantum computing started in the 1980s. It was then discovered that certain computational problems could be tackled more efficiently with quantum algorithms than with their classical counterparts. Quantum computing is made up of qubits. Classical computers are best for everyday tasks that need to be completed by a computer. Meanwhile, quantum computers are great for running simulations and data analyses, such as for chemical or drug trials. These computers must be kept ultra-cold, however. They are also much more expensive and difficult to build.

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