Quantum Nanostructures and
Nanofabrication Group

Prof. Karl K. Berggren

Marco Turchetti awarded Best Invited Poster at EIPBN

Congratulations to Marco Turchetti for being awarded Best Invited Poster at this year’s EIPBN conference in Orlando, FL. Details regarding his poster abstract may be found below:

Aberration-Corrected Quantum Electron Microscopy

Marco Turchetti, Chung-Soo Kim, Richard Hobbs, Navid Abedzadeh, Pieter Kruit and Karl K. Berggren

Quantum electron microscopy (QEM) is one of the most promising approaches that could overcome the resolution limit imposed by the radiation damage due to the minimum electron dose necessary to surpass shot noise. This is recognized as the main resolution limit when imaging biological specimens. A QEM scheme exploits the concept of interaction-free measurement in a resonant electron optical cavity, whose purpose is to generate and sustain two coupled states of the electron wavefunction, the reference and the sample states. In this work, we designed and simulated a linear resonant electron cavity, the core of a QEM apparatus, and we analysed the properties of each components necessary to build such a cavity. Moreover, we proposed and simulated two possible modifications to the base scheme demonstrating that they could efficiently be employed to correct spherical aberration inside the cavity. This could significantly improve the system final resolution. One involves insertion of a quadrupole-octupole corrector inside the cavity. The second one, instead involves substitution of the gated mirror with a hyperbolic triode mirror.