A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Work as an external quantum observable and an operational quantum work fluctuation theorem
Tekijät: Beyer K, Luoma K, Strunz WT
Kustantaja: AMER PHYSICAL SOC
Julkaisuvuosi: 2020
Journal: Physical Review Research
Tietokannassa oleva lehden nimi: PHYSICAL REVIEW RESEARCH
Lehden akronyymi: PHYS REV RES
Artikkelin numero: ARTN 033508
Vuosikerta: 2
Numero: 3
Sivujen määrä: 9
DOI: https://doi.org/10.1103/PhysRevResearch.2.033508
Tiivistelmä
e 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) over cap (S). We argue that quantum work fluctuation theorems which rely on the knowledge of (H) over cap (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.
e 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) over cap (S). We argue that quantum work fluctuation theorems which rely on the knowledge of (H) over cap (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.
Turun yliopiston Tutkimustietojärjestelmän portaali