A quantum Turing machine is a special type of computer that uses weird quantum rules to solve really tough problems. It's like having a superpower that can solve really hard puzzles that normal computers can't.
Normal computers use bits, which can be either 0 or 1, to store and process information. But a quantum Turing machine uses "qubits" instead, which can be 0 or 1 at the same time. This is called "superposition," and it lets the machine try many different combinations of inputs at the same time, which makes it really good at solving complex math problems.
The machine also uses a process called "quantum entanglement," which means that when two qubits are connected, they can affect each other even when they're really far apart. This lets the machine process information faster and in new ways.
Overall, a quantum Turing machine is like a super-smart computer that can try all possible solutions at the same time and communicate with itself even over long distances. It's still a really new technology, but scientists are really excited about what it could do in the future.