Active absorption of electromagnetic pulses in a cavity

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Authors	HORSLEY Simon FOSTER Robert TYC Tomáš PHILBIN Thomas
Year of publication	2015
Type	Article in Periodical
Magazine / Source	New Journal of Physics
MU Faculty or unit	Faculty of Science
Citation
web	http://iopscience.iop.org/article/10.1088/1367-2630/17/5/053050
Doi	https://doi.org/10.1088/1367-2630/17/5/053050
Field	Theoretical physics
Keywords	pulse; absorption; source; drain; eigenmodes
Description	We show that a pulse of electromagnetic radiation launched into a cavity can be completely absorbed into an infinitesimal region of space, provided one has a high degree of control over the current flowing through this region. We work out explicit examples of this effect in a cubic cavity and a cylindrical one, and experimentally demonstrate the effect in the microwave regime.
Related projects:	Ústav Eduarda Čecha pro algebru, geometrii a matematickou fyziku