Physical limits on information processing

Abstract

We derive a fundamental upper bound on the rate at which a device can process information (i.e., the number of logical operations per unit time), arising from quantum mechanics and general relativity. In Planck units a device of volume V can execute no more than the cube root of V operations per unit time. We compare this to the rate of information processing performed by nature in the evolution of physical systems, and find a connection to black hole entropy and the holographic principle.

2 pages, revtex, version to appear in Physics Letters B (reference added)

Cited by in corpus (2)

• Space-time uncertainty relation from quantum and gravitational principles
• Information, information processing and gravity