Downconversion of quantum fluctuations of photonic heat current in a circuit
Loading...
Access rights
openAccess
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Authors
Date
2021-10-15
Department
Major/Subject
Mcode
Degree programme
Language
en
Pages
5
Series
Physical Review B, Volume 104, issue 16
Abstract
We discuss the nonzero frequency noise of heat current with the explicit example of energy carried by thermal photons in a circuit. Instead of the standard circuit modeling that gives a convenient way of predicting timeaveraged heat current, we describe a setup composed of two resistors forming the heat baths by collections of bosonic oscillators. In terms of average heat transport this model leads to identical results with the conventional one, but besides this, it yields a convenient way of dealing with noise as well. The nonzero-frequency heat current noise does not vanish in equilibrium even at zero temperature, a result that is known for, e.g., electron tunneling. We present a modulation method that can convert the difficult-to-measure high-frequency quantum noise down to zero frequency.Description
| openaire: EC/H2020/742559/EU//SQH | openaire: EC/H2020/766025/EU//QuESTech
Keywords
THERMAL AGITATION, CONDUCTION
Other note
Citation
Karimi, B & Pekola, J P 2021, ' Downconversion of quantum fluctuations of photonic heat current in a circuit ', Physical Review B, vol. 104, no. 16, A72 . https://doi.org/10.1103/PhysRevB.104.165418