Landauer's Principle at Zero Temperature
Abstract
Landauer's bound relates changes in the entropy of a system with the inevitable dissipation of heat to the environment. The bound, however, becomes trivial in the limit of zero temperature. Here we show that it is possible to derive a tighter bound which remains nontrivial even as T →0 . As in the original case, the only assumption we make is that the environment is in a thermal state. Nothing is said about the state of the system or the kind of system-environment interaction. Our bound is valid for all temperatures and is always tighter than the original one, tending to it in the limit of high temperatures.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 2020
- DOI:
- 10.1103/PhysRevLett.124.240601
- arXiv:
- arXiv:1911.00910
- Bibcode:
- 2020PhRvL.124x0601T
- Keywords:
-
- Quantum Physics;
- Condensed Matter - Statistical Mechanics
- E-Print:
- Phys. Rev. Lett. 124, 240601 (2020)