2018/09/27 by Ivan Madan, I. Madan, Giovanni Maria Vanacore +15 · 3 citations
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Advanced Electron Microscopy Techniques and Applications #Integrated Circuits and Semiconductor Failure Analysis #Near-Field Optical Microscopy #cond-mat.mes-hall #physics.acc-ph #physics.optics #quant-ph
paper · pdf · doi:10.1126/sciadv.aav8358
published as Science Advances 03 May 2019: Vol. 5, no. 5, eaav8358 · 10 pages, 5 figures
arxiv created 2018/09/27 · openalex publication_date 2019/05/03 · arxiv updated 2019/06/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
Holography relies on the interference between a known reference and a signal of interest to reconstruct both the amplitude and phase of that signal. Commonly performed with photons and electrons, it finds numerous applications in imaging, cryptography and arts. With electrons, the extension of holography to the ultrafast time domain remains a challenge, although it would yield the highest possible combined spatio-temporal resolution. Here, we show that holograms of local electromagnetic fields can be obtained with combined attosecond/nanometer resolution in an ultrafast transmission electron microscope (UEM). Unlike conventional holography, where the signal and the reference are spatially separated and then recombined to interfere, in our method we use electromagnetic fields to split an electron wave function in a quantum coherent superposition of different energy states. In the image plane, spatial modulation of the electron-energy distribution reflects the phase relation between reference and signal fields, which we map via energy-filtered UEM. Beyond imaging applications, this approach allows implementing optically-controlled and spatially-resolved quantum measurements in parallel, providing an efficient and versatile tool for the exploration of electron quantum optics.