Journal
PHYSICAL REVIEW LETTERS
Volume 113, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.100603
Keywords
-
Categories
Funding
- EPSRC (UK)
- Templeton Foundation
- Leverhulme Trust
- Oxford Martin School
- National Research Foundation (Singapore)
- Ministry of Education (Singapore)
- Engineering and Physical Sciences Research Council [1378732] Funding Source: researchfish
Ask authors/readers for more resources
Landauer's principle states that it costs at least k(B)T ln 2 of work to reset one bit in the presence of a heat bath at temperature T. The bound of k(B)T ln 2 is achieved in the unphysical infinite-time limit. Here we ask what is possible if one is restricted to finite-time protocols. We prove analytically that it is possible to reset a bit with a work cost close to k(B)T ln 2 in a finite time. We construct an explicit protocol that achieves this, which involves thermalizing and changing the system's Hamiltonian so as to avoid quantum coherences. Using concepts and techniques pertaining to single-shot statistical mechanics, we furthermore prove that the heat dissipated is exponentially close to the minimal amount possible not just on average, but guaranteed with high confidence in every run. Moreover, we exploit the protocol to design a quantum heat engine that works near the Carnot efficiency in finite time.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available