3 ms·
The implementation of many types of computation are not 0 entropy, but it’s just an implementation detail. Sure, if you truly want to erase memory, then you can
by 4death4 3y ago
The implementation of many types of computation are not 0 entropy, but it’s just an implementation detail. Sure, if you truly want to erase memory, then you can’t do that without an entropy cost. But if your goal is to store information X for use in computation, then you can conceive of a reversible way to do that, or at least conclude that such a reversible process may not be impossible. In this way, Landauer’s limit is a sleight of hand. The conditions under which it is true does not encompass all possible conditions.
- tnecniv 3y agoThe disproofs of Landauer’s limit I am familiar with concern protocols that are not physically realizable, I.e. they require infinite time or an instantaneous quenching step. Do you have a reference that shows you can beat the limit without those assumptions? I’d really like to see how it’s done.
- 4death4 3y agoI don't have any proof that it's possible. I'm just saying that it's conceivable that it may be possible. As motivation, consider a quantum computer, where the vast majority of computation done is reversible.