Pulsed production of antihydrogen and other antiprotonic systems for precisions tests of fundamental symmetries and quantum sensing

量子物理学・ナノサイエンス第402回セミナー

概要

The production of cold antihydrogen atoms at CERN's Antiproton Decelerator (AD) has opened up the possibility to perform direct measurements of the Earth's gravitational acceleration on antimatter bodies. This is the main goal of the AEgIS collaboration: to measure the value of g using a pulsed source of cold horizontally travelling antihydrogen via a moiré deflectometer/Talbot-Lau interferometer. The first milestone of pulsed production of antihydrogen [1] using a resonant charge-exchange reaction between cold trapped antiprotons and Rydberg positronium (or Ps, the atomic bound state of a positron and an electron) atoms, and the techniques it relies on, will be presented, with a view to the first gravitational experiments using a pulsed beam of antihydrogen in the near future. Further physics directions in AEgIS relying on similar pulsed interactions in positronium [2] or between antiprotons and Rydberg atoms and molecules will also be touched upon, as they open up unexplored venues in nuclear physics, searches for dark matter, production of low energy antineutrons and novel precision tests of fundamental symmetries and present both a testing ground and a development platform for a number of quantum sensors that may also become relevant for High Energy Physics detectors.

　　　　 　　　　
• [1] C. Amsler et al. (AEgIS collaboration), Pulsed production of antihydrogen, Commun. Phys. 4, 19 (2021)https://doi.org/10.1038/s42005-020-00494-z
• [2] L.T. Glöggler et al. (AEgIS Collaboration), https://link.aps.org/doi/10.1103/PhysRevLett.132.083402 DOI: 10.1103/PhysRevLett.132.083402
　　　　

• 量子物理学・ナノサイエンス第402回セミナー

• 東京科学大学理学院・物理学系 ナノサイエンスを拓く量子物理学拠点　共催