The Heisenberg Compensator

'Tis rare (outside politics) that Sabine Hossfelder produces a video with higher B.S. content than what she's reviewing, but here's the title: Physicists Just Broke One Of Quantum Physics’ Biggest Restraints. That restraint is on cloning quantum information, which goes on to hamper error-checking in qubits.

The key constraint is, rather was, a theoretical result of the Quantum Mechanical equations around big-Φ and big-Ψ. In 1970 James Park proved the no-go theorem; the no-cloning = no-delete theorem followed in 1982. Pace Sabine this result stands; if it did not, it could well refute the whole thing. Lately instead it is compensated, as Trek would say (in the 1960s). At least in high-qubit quantum computers.

The compensation happens if the cloning also encrypts. Thence, among the encrypted clones, one can freely choose any one to decrypt and thereby recovers the original state with fidelity up to 1.

What I did not know is that BM Heron-R2 superconducting processors using up to 154 qubits existed. But then - Current Year is indeed 2026.

Qubit-cloning will likely lead to better error correction. We were already well on our way to Q Day.