Active absorption of electromagnetic pulses in a cavity
New Journal of Physics
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© 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.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 throughthis 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.
AuthorsHorsley, SAR; Foster, RN; Tyc, T; Philbin, TG
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