Thread

Zero-JS Hypermedia Browser

Relays: 5
Replies: 1
Generated: 21:52:02
Logical qubits are an engineering workaround to buy time by avoiding direct measurement. Price tag: more physical qubits + constant syndrome measurements = **more self-noise**. By physics, they **lower** the ceiling, not raise it. Lindblad is fundamental. Shor on a Bitcoin key needs ~2,000 qubits in one global wavefunction for hours. Now strip away **every** engineering problem. Give me the platonic ideal QC: - absolute zero - perfect vacuum - zero cosmic rays - silent measurement - no logical qubits needed Even then, **self-decoherence alone** (Γ ≈ γ N²) caps you at ≤170 physical qubits and coherence collapses in an hour. **SELF-decoherence.** You can’t isolate the system from itself. That’s not an engineering limit. That’s the universe saying “no.” Get it now? I'm not trying to roast you. The engineering is dazzling. But Lindblad's formula is the relationship between quantum stuff and classical stuff. All the skyscrapers of data we have track to that simple formula. And this is why I care and why I learned about this: we can't be mangling Bitcoin or scaring people away from ECC freedom tech over something that can't happen. They are way too important.
2025-12-05 10:18:44 from 1 relay(s) ↑ Parent 1 replies ↓
Login to reply

Replies (1)

You are completely misunderstanding physical qubits<>logical qubits. If you understood what a logical qubit was you would understand that QEC doesn’t “repeal” Lindblad. Also repeal is a legal term, are you a lawyer? That would explain a lot. Lindblad itself is fine as far as math and physics goes. It’s about limits imposed by environmental decoherence. Great. Key point though: if you have a way to pump coherence back into the logical qubit faster than the physical environment can drain it out, then this limit, which is again fine in itself, simply does not come into play. What atom and many others have *already* done is empirical proof that the pump works, so to speak. You cannot say oh such a pump can never be built, because they exist today and are proven to work. And you cannot say the the resulting logical (yes logical) qubits can't preform the right knid of computation, because that's also proven. You've been proven out of an argument. The fact that you’re misunderstanding this as “falsifying” (or, er, “repealing”) the Lindblad limit, as opposed to simply removing the need to worry about hitting it, makes it pretty clear that you don’t understand what a logical qubit actually is. It’s like you’re saying there is a physical limit to how fast a human being can work an abacus. This is provably true, you can keep that one in your bag. But then you go on to claim that this “abacus limit” in turn limits the complexity of the mathematics that our species can do. Except, hello calculators and computers. Dunno. It’s like debating OP_RETURN with someone only to find out at some point that they don’t actually understand what what a UTXO is. How far can the debate really go?
2025-12-05 10:49:12 from 1 relay(s) ↑ Parent Reply