No, we are not living in a quantum computer. Quantum computers are specialized devices that utilize the principles of quantum mechanics to perform calculations and solve certain problems more efficiently than classical computers.
The concept of a quantum computer involves the manipulation and control of quantum states, such as superposition and entanglement, to perform computational operations. These operations are carried out on quantum bits, or qubits, which are the quantum analogs of classical bits used in traditional computers.
In contrast, the universe in which we exist is not itself a quantum computer. Our universe operates according to the laws of physics, including quantum mechanics, but it is not a computational device or an entity that performs computations in the same way a quantum computer does.
Quantum computers are man-made machines designed to harness the power of quantum mechanics for specific computational tasks. While they hold tremendous potential for solving certain problems more efficiently, they are distinct from the natural world in which we live.