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Yanagisawa H, Ciappina M, Hafner C, et al. Optical Control of Young's Type Double-slit Interferometer for Laser-induced Electron Emission from a Nano-tip. Sci Rep. 2017;7(1):12661doi: 10.1038/s41598-017-12832-3.
Yanagisawa, H., Ciappina, M., Hafner, C., Schötz, J., Osterwalder, J., & Kling, M. F. (2017). Optical Control of Young's Type Double-slit Interferometer for Laser-induced Electron Emission from a Nano-tip. Scientific reports, 7(1), 12661. https://doi.org/10.1038/s41598-017-12832-3
Yanagisawa, Hirofumi, et al. "Optical Control of Young's Type Double-slit Interferometer for Laser-induced Electron Emission from a Nano-tip." Scientific reports vol. 7,1 (2017): 12661. doi: https://doi.org/10.1038/s41598-017-12832-3
Yanagisawa H, Ciappina M, Hafner C, Schötz J, Osterwalder J, Kling MF. Optical Control of Young's Type Double-slit Interferometer for Laser-induced Electron Emission from a Nano-tip. Sci Rep. 2017 Oct 04;7(1):12661. doi: 10.1038/s41598-017-12832-3. PMID: 28978914; PMCID: PMC5627254.
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Sci Rep. 2017 Oct 04;7(1):12661. doi: 10.1038/s41598-017-12832-3.

Optical Control of Young's Type Double-slit Interferometer for Laser-induced Electron Emission from a Nano-tip.

Scientific reports

Hirofumi Yanagisawa, Marcelo Ciappina, Christian Hafner, Johannes Schötz, Jürg Osterwalder, Matthias F Kling

Affiliations

  1. Institute for Quantum Electronics, ETH Zürich, CH-8093, Zürich, Switzerland. [email protected].
  2. Max Planck Institute of Quantum Optics, D-85748, Garching, Germany. [email protected].
  3. Physics Department, Ludwig-Maximilians-Universität Munich, D-85748, Garching, Germany. [email protected].
  4. Institute of Physics of the ASCR, ELI-Beamlines, Na Slovance 2, 182 21, Prague, Czech Republic.
  5. Laboratory for Electromagnetic Fields and Microwave Electronics, CH-8092, Zürich, Switzerland.
  6. Max Planck Institute of Quantum Optics, D-85748, Garching, Germany.
  7. Physics Department, Ludwig-Maximilians-Universität Munich, D-85748, Garching, Germany.
  8. Physik-Institut, Universität Zürich, CH-8057, Zürich, Switzerland.

PMID: 28978914 PMCID: PMC5627254 DOI: 10.1038/s41598-017-12832-3

Abstract

Interference experiments with electrons in a vacuum can illuminate both the quantum and the nanoscale nature of the underlying physics. An interference experiment requires two coherent waves, which can be generated by splitting a single coherent wave using a double slit. If the slit-edge separation is larger than the coherence width at the slit, no interference appears. Here we employed variations in surface barrier at the apex of a tungsten nano-tip as slits and achieved an optically controlled double slit, where the separation and opening-and-closing of the two slits can be controlled by respectively adjusting the intensity and polarization of ultrashort laser pulses. Using this technique, we have demonstrated interference between two electron waves emitted from the tip apex, where interference has never been observed prior to this technique because of the large slit-edge separation. Our findings pave the way towards simple time-resolved electron holography on e.g. molecular adsorbates employing just a nano-tip and a screen.

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