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Medientyp:
E-Artikel
Titel:
Heat Transfer and Entanglement–Non‐Equilibrium Correlation Spectra of Two Quantum Oscillators
Beteiligte:
Henkel, Carsten
Erschienen:
Wiley, 2021
Erschienen in:Annalen der Physik
Sprache:
Englisch
DOI:
10.1002/andp.202100089
ISSN:
0003-3804;
1521-3889
Entstehung:
Anmerkungen:
Beschreibung:
<jats:title>Abstract</jats:title><jats:p>The non‐equilibrium state of two oscillators with a mutual interaction and coupled to separate heat baths is discussed. Bosonic baths are considered, and an exact spectral representation for the elements of the covariance matrix is provided analytically. A wide class of spectral densities for the relevant bath modes is allowed for. The validity of the fluctuation‐dissipation relation is established for global equilibrium (both baths at the same temperature) in the stationary state. Spectral measures of entanglement are suggested by comparing to the equilibrium spectrum of zero‐point fluctuations. No rotating‐wave approximation is applied, and anomalous heat transport from cold to hot bath, as reported in earlier work, is demonstrated not to occur.</jats:p>