are those the Turing machines which can send an unlimited number of qubits back through a closed timelike curve? that result was mind-blowing. It only required

are those the Turing machines which can send an unlimited number of qubits back through a closed timelike curve? that result was mind-blowing. It only required classical computers, however, at least in the formulation I saw. Reversible computing in general seems weird when it comes to time.