Tailoring Single-Electron Emission Distributions in the Time-Energy Phase Space.

Area of Science:

• Quantum Optics
• Electron Microscopy
• Quantum Information Science

Background:

• Precise characterization and control of single-electron wave functions are crucial for advancing electron quantum optics.
• Current methods lack the fine-tuned control needed for sophisticated quantum applications.

Purpose of the Study:

• To develop and demonstrate a method for tailoring single-electron emission distributions using energy filtering.
• To enable selective control over electron wave functions under varying energy barrier conditions.

Main Methods:

• Implementation of an energy filtering technique to modify the electron emission distribution.
• Reconstruction of the tailored electron's Wigner distribution in time-energy phase space.
• Utilization of continuous-variable tomography for detailed phase-space analysis.

Main Results:

• Demonstrated successful tailoring of single-electron distributions via energy filtering.
• Observed that filtering effectively removes portions of the distribution below the energy barrier.
• Characterized the impact of filtering on the electron's Wigner distribution in time-energy space.

Conclusions:

• The energy filtering method provides precise control over single-electron wave functions.
• This technique is a significant advancement for designing experiments in electron quantum optics.
• The findings are expected to contribute to the development of quantum information processing technologies.