Overview

• The BASE collaboration at CERN trapped a single antiproton and induced coherent spin oscillations for 50 seconds, creating the first antimatter qubit.
• The experiment, published in Nature on July 23, used a cryogenic Penning trap system to suppress decoherence and enable high-fidelity Rabi oscillations.
• Researchers plan to leverage coherent spectroscopy to boost antiproton magnetic moment measurement precision by factors of 10 to 100.
• The BASE-STEP portable trap system is being developed to move antiprotons to ultra-low magnetic noise environments and potentially extend coherence times tenfold.
• This control over antimatter spin states lays the groundwork for stringent tests of charge-parity-time symmetry and investigations into the universe’s matter-antimatter imbalance.