Volume 115, Number 4, August 2016
|Number of page(s)||6|
|Section||The Physics of Elementary Particles and Fields|
|Published online||26 September 2016|
Fluctuational electrodynamics for nonlinear media
4th Institute for Theoretical Physics, Universität Stuttgart - Stuttgart, Germany and Max Planck Institute for Intelligent Systems - 70569 Stuttgart, Germany
Received: 20 June 2016
Accepted: 31 August 2016
We develop fluctuational electrodynamics for media with nonlinear optical response. In a perturbative manner, we amend the stochastic Helmholtz equation to describe fluctuations in a nonlinear setting, in agreement with the fluctuation dissipation theorem, and identify the local (Rytov) fluctuations of electric currents. We show how the linear response (the solution of the scattering problem) of a collection of objects is found from the individual responses, as measured in isolation. As an example, we compute the Casimir force acting between nonlinear objects which approaches the result for linear optics for large separations, and deviates for small distances.
PACS: 12.20.-m – Quantum electrodynamics / 42.65.-k – Nonlinear optics / 42.50.Lc – Quantum fluctuations, quantum noise, and quantum jumps
© EPLA, 2016
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.