Work as an external quantum observable and an operational quantum work fluctuation theorem
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
We propose a definition of externally measurable quantum work in driven systems. Work is given as a quantum observable on a control device which is forcing the system and can be determined without knowledge of the system Hamiltonian $H_S$ . We argue that quantum work fluctuation theorems which rely on the knowledge of $H_S$ are of little practical relevance, contrary to their classical counterparts. Using our framework, we derive a fluctuation theorem which is operationally accessible and could in principle be implemented in experiments to determine bounds on free energy differences of unknown systems.
Details
Originalsprache | Englisch |
---|---|
Seitenumfang | 9 |
Fachzeitschrift | Physical Review Research |
Jahrgang | 2 |
Publikationsstatus | Veröffentlicht - 2020 |
Peer-Review-Status | Ja |
Externe IDs
Scopus | 85098423574 |
---|---|
ORCID | /0000-0002-7806-3525/work/142234182 |
ORCID | /0000-0002-1864-4520/work/142234861 |
Schlagworte
Schlagwörter
- quantum work in driven systems