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First demonstration of antimatter quantum interference

5/22/2019 ore 14:00 Sala Consiglio
First demonstration of antimatter quantum interference
Dr. Marco Giammarchi INFN Milano

"In 1924 Louis de Broglie introduced the concept of wave-particle duality:
the Planck constant relates the momentum of a massive particle to its
wavelength. Diffraction and interference phenomena were therefore
predicted and have been observed on objects of increasing complexity,
from electrons to neutrons and molecules. Beyond the early electron
diffraction experiments, the demonstration of single-electron double-slit-like
interference (initially proposed by Feynman as a ""gedanken"" experiment)
was finally carried out in 1976. A few years later, positron diffraction was
first observed. However, an analog of the double-slit electron experiment
has not been performed to date on any system containing antimatter. In this
talk I will present the observation of matter wave interference of single
positrons: it is the first demonstration of single-particle interference for
antimatter."

silvia leoni    silvia.leoni@mi.infn.it

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