Is there a fundamental physical limitation to the amount of space needed to contain a single bit?

Question

Is there a fundamental physical limitation to the amount of space needed to contain a single bit?

In: 1

Answer 1

Yes, or so it is believed. To represent a bit, you need something that can have two states. We currently believe (or that is my understanding) that there are indivisible fundamental particles, so however much space they take up is how much space you need to contain a single bit of information.

Another way to look at this is that the amount of soace you need to physically store a bit of information is limited by the planck constant, as that limits how close together you can pack particles.

This is, of course, highly theoretical, there are other limits to computation, and most of them are a lot more present than the limit on density of integration.