Cathodoluminescence from different lateral regions of an extended electron beam adds incoherently, while a single electron can coherently excite two nearby pillars; a quantum eraser geometry is proposed to restore interference.
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Studying electron beam coherence using plasmon interference
Cathodoluminescence from different lateral regions of an extended electron beam adds incoherently, while a single electron can coherently excite two nearby pillars; a quantum eraser geometry is proposed to restore interference.