(Phys.org)—Quantum computers are inherently different from their classical counterparts because they involve quantum phenomena,such as superposition and entanglement, which do not exist in classical digital computers. But in a original paper, and physicists gain shown that a classical analog computer can be used to emulate a quantum computer,along with quantum superposition and entanglement, with the result that the fully classical system behaves like a true quantum computer.
Source: phys.org