The Computer was invented to solve computing problems. **Traditional** computer or classical computer was developed based on classical physics concept. Traditional computers use binary digits (bits) that can be either 0 or 1 to represent information. But some problems can not be solved by classical computers or it will take a week or month or years to solve.

**For Example maze problem**

The time taken by a classical computer to solve a maze problem depends on the size and complexity of the maze. For small and simple mazes, a classical computer can solve the problem quickly, typically in a matter of milliseconds or seconds.

However, as the size and complexity of the maze increase, the time taken by a classical computer to solve the problem can increase exponentially, and it may take hours, days, or even longer to find a solution.

But to simulate one nature behavior like chemical simulation, will take years or can not be solved by using traditional computers. To solve very complex kinds of problems, the Quantum computer comes into the picture.

Quantum computers use quantum bits, or qubits, which can be both 0 and 1 at the same time. This allows quantum computers to perform many calculations simultaneously and solve certain problems that classical computers would take a very long time to solve, or even be unable to solve at all.

It can have many states of 0 and 1 like the states of the rolling coin.

Use cases where Quantum Computers can be used

**Chemical Simulation****Health sector**:**Drug discovery**: Quantum computing can accelerate the process of drug discovery by simulating the behavior of molecules at the quantum level. This can help identify new drug candidates and optimize existing ones much faster than classical computers.**Medical imaging**: Quantum computing can improve the accuracy of medical imaging by optimizing the processing of large data sets and reducing the time required for analysis. This can lead to faster and more accurate diagnoses of diseases such as cancer.**Genomics**: Quantum computing can help analyze large genomic data sets to identify genetic mutations and develop personalized treatments for patients. This can lead to more effective treatments and better outcomes for patients with genetic diseases.**Health data analysis**: Quantum computing can help analyze large and complex health data sets, such as electronic health records, to identify patterns and correlations that may be missed by classical computers. This can lead to more accurate diagnoses, better treatments, and improved health outcomes for patients.And there are many more.

Quantum computer will not going to replace traditional computer and will be available through cloud service as it is a very complex machine.Quantum compture is next big thing gonna happen and the winner will rule.That is the reason many companies are betting biliions of dollars in quantum computer. This is the area where many products can be build.

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