Quantum computers are a new type of computer that work on the principles of quantum mechanics, which is the branch of physics that studies the behavior of matter and energy at a very small scale. Unlike traditional computers, which store and manipulate data using bits that can be either 0 or 1, quantum computers use qubits (quantum bits) that can be both 0 and 1 at the same time. This allows quantum computers to perform certain types of calculations much faster than traditional computers.

Here are the basic steps that quantum computers use to perform calculations:

- Initialization: The qubits are initialized, which means they are set to a specific state that can be either 0 or 1, or a combination of both.
- Superposition: The qubits are put into a state of superposition, which means they can be both 0 and 1 at the same time.
- Entanglement: The qubits are entangled, which means they are linked together in a way that allows them to share information instantly, regardless of the distance between them.
- Measurement: The qubits are measured, which means their state is determined. This collapses their state from a state of superposition to a definite state of either 0 or 1.

By using these four steps, quantum computers can perform calculations much faster than traditional computers for certain types of problems. For example, quantum computers can be used to solve complex mathematical problems, simulate complex systems like molecules and materials, and break certain types of encryption.

However, quantum computers are still in the early stages of development and are not yet widely available. They also require specialized knowledge and expertise to program and operate, so it may take some time before they become a mainstream technology.