Quantum breakthrough: Scientists created antimatter from light

Scientists have simulated gamma-ray collisions, producing antimatter jets and unlocking new insights into extreme astrophysical phenomena.

Joseph Shavit
Published Jan 26, 2025 1:07 PM PST

High-powered lasers have transformed the way researchers explore extreme physical phenomena, pushing the boundaries of quantum physics and astrophysics. These lasers, when focused to nearly their diffraction limit, generate electromagnetic fields of immense strength.

Such fields not only allow the acceleration of energetic particles but also enable the study of processes that typically occur only in the most extreme environments, such as the creation of electron-positron pairs—a phenomenon previously confined to astrophysical settings like pulsar magnetospheres.

At laser intensities exceeding 10²³ W/cm², quantum-electrodynamical (QED) effects become non-linear. One of the most fascinating processes is the Breit-Wheeler process, in which gamma photons collide to produce matter-antimatter pairs, specifically electrons and positrons.

While non-linear pair creation using intense lasers has been observed, the linear Breit-Wheeler process, which requires two real photons to interact, remains elusive in laboratory settings. This process is rare due to its small cross-section, demanding high photon fluxes for successful observation.

More:
https://www.thebrighterside.news/post/quantum-breakthrough-scientists-created-antimatter-from-light/