Category: Update
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Top-10 Physics Breakthrough of 2025
Top-10 Physics Breakthrough of 2025 We are thrilled and deeply honored that our work on the first non-destructive coherent spectroscopy of a single antiproton spin has been selected as one of the Top 10 Breakthroughs of the Year by Physics World. This recognition highlights a major step forward in precision antimatter physics, achieved through the
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Breakthrough: First Coherent Spectroscopy with a Single Antiproton Spin
Breakthrough: First Coherent Spectroscopy with a Single Antiproton Spin In a major milestone for quantum physics and antimatter research, we at BASE have demonstrated the first coherent spectroscopy with a single antiproton spin. By keeping a single antiproton oscillating coherently between the “spin-up” and the “spin-down” states for 50 seconds, we’ve demonstrated quantum control over
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BASE-STEP – Paving Way for Mobile Antiproton Research
BASE-STEP – Paving Way for Mobile Antiproton Research In a major milestone for antimatter research, we have – for the first time – successfully transported protons outside an antimatter laboratory using our fully autonomous, open, mobile Penning trap system BASE-STEP. This pioneering technology enables the relocation of charged particles without the need for continuous external
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Orders of Magnitude Improved Cyclotron-Mode Cooling for Nondestructive Spin Quantum Transition Spectroscopy with Single Trapped Antiprotons
Orders of Magnitude Improved Cyclotron-Mode Cooling for Nondestructive Spin Quantum Transition Spectroscopy with Single Trapped Antiprotons In an article, published today in Physical Review Letter, we demonstrate efficient sub-thermal cooling of the modified cyclotron mode of a single trapped antiproton and reach particle temperatures below 200 mK in preparation times shorter than 500 s. This
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Image-Current Mediated Sympathetic Laser Cooling of a Single Proton in a Penning Trap Down to 170 mK Axial Temperature
Image-Current Mediated Sympathetic Laser Cooling of a Single Proton in a Penning Trap Down to 170 mK Axial Temperature In an article, published today in Physical Review Letter, we demonstrate a new temperature record for image-current mediated sympathetic cooling of a single proton in a cryogenic Penning trap by laser-cooled beryllium ions. In our experiments
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A 16 parts-per-trillion comparison of the proton/antiproton charge-to-mass ratios
A 16 parts-per-trillion comparison of the proton/antiproton charge-to-mass ratios In a paper published today in Nature, we report on the most precise comparison between a fundamental property of protons and antiprotons. Analysing a total of about 24000 proton and antiproton cyclotron frequency measurements, taken over the course of one year and half, we found that
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COOL NEW TECHNIQUE: SYMPATHETIC COOLING OF PROTONS BY LASER-COOLED BERYLLIUM IONS
COOL NEW TECHNIQUE: SYMPATHETIC COOLING OF PROTONS BY LASER-COOLED BERYLLIUM IONS Today, we report in Nature on the first sympathetic cooling of a single trapped proton, using laser-cooled beryllium ions stored in a spatially separated trap. The energy exchange between the proton and the laser-cooled ions is mediated by image currents induced by the ions
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BASE and ALPHA in the Top 10 of Physics Breakthroughs 2021
BASE and ALPHA in the Top 10 of Physics Breakthroughs 2021 One of the highlights in the annual Physics calendar is the announcement of the “Physics Breakthroughs of the Year”, by the journal Physics World. This year, our paper on “Sympathetic cooling of protons mediated by a superconducting LC-circuit”, published in Nature, was selected as
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Detection of metastable electronic states by Penning trap mass spectrometry
Detection of metastable electronic states by Penning trap mass spectrometry We congratulate our friends at PENTATRAP at the Max Planck Institute for Nuclear Physics in Heidelberg , which report here on the detection of a 200eV excited metastable state in highly charged Rhenium, identified by a 10 ppt mass measurement. Also some BASE members were
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Direct Limits on the Interaction of Antiprotons with Axion-Like Dark Matter
Direct Limits on the Interaction of Antiprotons with Axion-Like Dark Matter Today we publish the first limits on the interaction of antiprotons with axion-like dark matter. For this work we’ve teamed up with scientists from the PRISMA+ cluster at Mainz, which have great expertise in dark matter research Astronomical observations tell us that dark matter