No, it is not possible to build an ordinary computer out of a quantum computer. Quantum computers and classical computers are fundamentally different in their underlying principles and architecture.
Classical computers, which are the computers we commonly use today, operate based on binary digits (bits) that can be in a state of either 0 or 1. These bits are processed using logical operations such as AND, OR, and NOT, which form the basis of classical computing.
On the other hand, quantum computers use quantum bits, or qubits, which can represent both 0 and 1 simultaneously thanks to a property known as superposition. Quantum computers also leverage another property called entanglement, where the states of multiple qubits become interconnected. These properties allow quantum computers to perform certain computations much more efficiently than classical computers for specific tasks.
While a quantum computer can simulate the behavior of a classical computer, it would not be practical to build an ordinary computer out of a quantum computer. The unique properties of quantum systems would not be utilized effectively for classical computing tasks, and the overhead and complexity of implementing classical computing within a quantum system would outweigh any potential benefits.
It's worth noting that quantum computers excel at solving certain types of problems, such as factorization, optimization, and simulation of quantum systems. However, for everyday tasks and general-purpose computing, classical computers remain the most practical and efficient choice.