Personal profile

Research interests

I'm interested in understanding the matter-antimatter asymmetry present in our universe. In collaboration with the ALPHA experiment at CERN, I synthesise and trap atoms of antihydrogen, the antimatter counterpart of hydrogen, and measure their spectroscopic and gravitational properties with high precision. My aim is to make direct comparisons between hydrogen and antihydrogen, i.e., with both species measured in the same trap, with the same laser, and at the same time. Such measurements would be insensitive to systematic shifts, and bring about a step change in the precision with which we can test matter-antimatter symmetries. To this end, I am developing an ion trap source of cold atomic hydrogen at the University of Groningen which is compatible with antihydrogen experiments.

I am also interested in developing a spectroscopy experiments using room temperature traps constructed from permanent magnets, with the eventual aim of producing a hydrogen optical clock. Since transitions in hydrogen can be calculated with high accuracy, the clock could be used to redefine the SI second based on other fundamental constants, rather than the measurement of an arbitrary transition.

Biosketch

I received my PhD from Swansea University in 2017, where I made the first laser spectroscopy measurements of antihydrogen. Between 2017 and 2021 I was a postdoc with Aarhus University, where I laser cooled antihydrogen and pushed the spectroscopy campaign to the limit of what our equipment could measure at the time, and between 2021 and 2022 I was a postdoc with Swansea University, where I worked towards improving antihydrogen production rates using laser cooled beryllium ions. In 2022, I was hired as an assistant professor at the University of Groningen, where I am developing an ion trap source of cold atomic hydrogen for direct comparison with antihydrogen.

Expertise related to UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):

  • SDG 7 - Affordable and Clean Energy

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Collaborations and top research areas from the last five years

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  • The ALPHA-2 apparatus - facilitating experimentation with trapped antihydrogen

    Akbari, R., Alves, B. X. R., Baker, C. J., Baquero-Ruiz, M., Bertsche, W., Butler, E., Burrows, C., Capra, A., Cesar, C. L., Charlton, M., Collister, R., Cridland, A., Eriksson, S., Evans, A., Evans, L. T., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M. C. & Gill, D. R. & 30 others, Grandemange, P., Granum, P., Gutierrez, A., Hangst, J. S., Hayden, M. E., Hodgkinson, D., Isaac, C. A., Ishida, A., Johnson, M. A., Jones, J. M., Jones, S. A., Jonsell, S., Khramov, A., Kurchaninov, L., Little, A., Madsen, N., Maxwell, D., McKenna, J. T. K., Menary, S., Michan, J. M., Momose, T., Mullan, P. S., Olchanski, K., Olin, A., Peszka, J., Povilus, A., Powell, A., Pusa, P., Rasmussen, C. & van der Werf, D. P., Mar-2025, In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1072, 24 p., 170194.

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  • Adiabatic expansion cooling of antihydrogen

    The ALPHA Collaboration, Ahmadi, M., Alves, B. X. R., Baker, C. J., Bertsche, W., Capra, A., Cohen, S., Torkzaban, C., Cesar, C. L., Charlton, M., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M. C., Granum, P., Hangst, J. S. & Hayden, M. E. & 27 others, Hodgkinson, D., Isaac, C. A., Johnson, M. A., Jones, S. A., Jonsell, S., Kalem, N., Madsen, N., Maxwell, D., McKenna, J. T. K., Menary, S., Momose, T., Munich, J., Olchanski, K., Olin, A., Pusa, P., Rasmussen, C., Robicheaux, F., Sacramento, R. L., Sameed, M., Sarid, E., Silveira, D. M., So, C., Stutter, G., Tharp, T. D., Thompson, R. I., Van Der Werf, D. P. & Wurtele, J. S., Sept-2024, In: Physical Review Research. 6, 3, 6 p., L032065.

    Research output: Contribution to journalLetterAcademicpeer-review

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    1 Citation (Scopus)
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  • Measurements of Penning-Malmberg trap patch potentials and associated performance degradation

    ALPHA Collaboration, Jan-2024, In: Physical Review Research. 6, 1, 8 p., L012008.

    Research output: Contribution to journalArticleAcademicpeer-review

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    3 Citations (Scopus)
  • Design and performance of a novel low energy multispecies beamline for an antihydrogen experiment

    ALPHA Collaboration, Baker, C. J., Bertsche, W., Capra, A., Cesar, C. L., Charlton, M., Christensen, A. J., Collister, R., Cridland Mathad, A., Eriksson, S., Evans, A., Evetts, N., Fabbri, S., Fajans, J., Friesen, T., Fujiwara, M. C., Gill, D. R., Grandemange, P., Granum, P. & Hangst, J. S. & 31 others, Hayden, M. E., Hodgkinson, D., Isaac, C. A., Johnson, M. A., Jones, J. M., Jones, S. A., Khramov, A., Kurchaninov, L., Madsen, N., Maxwell, D., McKenna, J. T. K., Menary, S., Momose, T., Mullan, P. S., Munich, J. J., Olchanski, K., Peszka, J., Powell, A., Rasmussen, C., Sacramento, R. L., Sameed, M., Sarid, E., Silveira, D. M., So, C., Starko, D. M., Stutter, G., Tharp, T. D., Thompson, R. I., Torkzaban, C., Van Der Werf, D. P. & Wurtele, J. S., Apr-2023, In: Physical Review Accelerators and Beams. 26, 4, 040101.

    Research output: Contribution to journalArticleAcademicpeer-review

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    2 Citations (Scopus)
  • Observation of the effect of gravity on the motion of antimatter

    Anderson, E. K., Baker, C. J., Bertsche, W., Bhatt, N. M., Bonomi, G., Capra, A., Carli, I., Cesar, C. L., Charlton, M., Christensen, A., Collister, R., Cridland Mathad, A., Duque Quiceno, D., Eriksson, S., Evans, A., Evetts, N., Fabbri, S., Fajans, J., Ferwerda, A. & Friesen, T. & 51 others, Fujiwara, M. C., Gill, D. R., Golino, L. M., Gomes Gonçalves, M. B., Grandemange, P., Granum, P., Hangst, J. S., Hayden, M. E., Hodgkinson, D., Hunter, E. D., Isaac, C. A., Jimenez, A. J. U., Johnson, M. A., Jones, J. M., Jones, S. A., Jonsell, S., Khramov, A., Madsen, N., Martin, L., Massacret, N., Maxwell, D., McKenna, J. T. K., Menary, S., Momose, T., Mostamand, M., Mullan, P. S., Nauta, J., Olchanski, K., Oliveira, A. N., Peszka, J., Powell, A., Rasmussen, C., Robicheaux, F., Sacramento, R. L., Sameed, M., Sarid, E., Schoonwater, J., Silveira, D. M., Singh, J., Smith, G., So, C., Stracka, S., Stutter, G., Tharp, T. D., Thompson, K. A., Thompson, R. I., Thorpe-Woods, E., Torkzaban, C., Urioni, M., Woosaree, P. & Wurtele, J. S., 27-Sept-2023, In: Nature. 621, 7980, p. 716-722 7 p.

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    43 Citations (Scopus)
    101 Downloads (Pure)