Non-Poissonian Ultrashort Nanoscale Electron Pulses

Authors

Sam Keramati, University of Nebraska-Lincoln
Will Brunner, University of Nebraska-Lincoln
T. J. Gay, University of Nebraska - LincolnFollow
Herman Batelaan, University of Nebraska-LincolnFollow

Date of this Version

10-27-2021

Citation

PHYSICAL REVIEW LETTERS 127, 180602 (2021). DOI: 10.1103/PhysRevLett.127.180602

Comments

Used by permission.

Abstract

The statistical character of electron beams used in current technologies, as described by a stream of particles, is random in nature. Using coincidence measurements of femtosecond pulsed electron pairs, we report the observation of sub-Poissonian electron statistics that are nonrandom due to two-electron Coulomb interactions, and that exhibit an antibunching signal of 1 part in 4. This advancement is a fundamental step toward observing a strongly quantum degenerate electron beam needed for many applications, and in particular electron correlation spectroscopy.