Professor Stefan Eriksson

Professor

Physics

+44 (0) 1792 602291

s.j.eriksson@swansea.ac.uk

Office - 521
Fifth Floor
Vivian Building
Singleton Campus

Available For Postgraduate Supervision

Research Links

https://orcid.org/0000-0002-5390-1879

Google Scholar

About

I am exploring fundamental physics by conducting experiments with matter and antimatter at temperatures approaching absolute zero. Currently, I focus on antihydrogen with my group in the ALPHA collaboration at CERN. Our aim is to precisely compare the properties of hydrogen and antihydrogen, which ought to be the same. If they were not, something would be amiss with the very foundations of physics. We hope that our studies could help shed light on one of the deepest mysteries of all; why there is almost no antimatter left in our universe today, when at the beginning there were equal amounts. The ALPHA collaboration was the first to show resonant excitation of antihydrogen and we are now able to conduct antihydrogen spectroscopy with a precision reaching few parts in a trillion. I am leading a major effort to improve the precision further.

I have also developed new techniques to study ultracold matter with components small enough to create chip-scale devices which became one of the platforms for quantum information processing and I am developing new ways to use nanoscale optics in these types of experiments.

Before taking up my post at Swansea University in 2007 I spent an extensive period at Imperial College London. I received my PhD from the University of Helsinki.

Areas Of Expertise

Atomic Physics
Antihydrogen
Quantum optics
Laser Cooling and Trapping
Bose-Einstein Condensation
Atom Interferometry
Laser Spectroscopy

Career Highlights

Award Highlights

Leverhulme Research Fellowship 2014-2016

Collaborations

Publications

Research Highlights

Baker, C., Bertsche, W., Capra, A., Cesar, C., Charlton, M., Christensen, A., Collister, R., Mathad, A., Eriksson, S., Evans, A., Evetts, N., Fabbri, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Grandemange, P., Granum, P., Hangst, J...., & Jones, J. (2023). Design and performance of a novel low energy multispecies beamline for an antihydrogen experiment. Physical Review Accelerators and Beams, 26(4)
https://doi.org/10.1103/physrevaccelbeams.26.040101, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa63230
http://dx.doi.org/10.1103/physrevaccelbeams.26.040101
Baker, C., Bertsche, W., Capra, A., Carruth, C., Cesar, C., Charlton, M., Christensen, A., Collister, R., Cridland, A., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Grandemange, P., Granum, P., Hangst, J...., & Charlton, M. (2021). Laser cooling of antihydrogen atoms. Nature, 592(7852), 35-42.
https://doi.org/10.1038/s41586-021-03289-6, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa56625
Baker, C., Bertsche, W., Capra, A., Cesar, C., Charlton, M., Cridland, A., Eriksson, S., Evans, A., Evetts, N., Fabbri, S., Fajans, J., Friesen, T., Fujiwara, M., Grandemange, P., Granum, P., Hangst, J., Hayden, M., Hodgkinson, D., Isaac, A...., & Wurtele, J. (2021). Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production. Nature Communications, 12(1)
https://doi.org/10.1038/s41467-021-26086-1, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa58657
Charlton, M., Eriksson, S., & Shore, G. (2020). Antihydrogen and Fundamental Physics Springer International Publishing.
https://doi.org/10.1007/978-3-030-51713-7, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa54802
http://dx.doi.org/10.1007/978-3-030-51713-7
Collaboration), ., Ahmadi, M., Alves, B., Baker, C., Bertsche, W., Capra, A., Carruth, C., Cesar, C., Charlton, M., Cohen, S., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Granum, P...., & Wurtele, J. (2020). Investigation of the fine structure of antihydrogen. Nature, 578(7795), 375-380.
https://doi.org/10.1038/s41586-020-2006-5, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa53592
Ahmadi, M., Alves, B., Baker, C., Bertsche, W., Capra, A., Carruth, C., Cesar, C., Charlton, M., Cohen, S., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Hangst, J., Hardy, W...., & Wurtele, J. (2018). Observation of the 1S–2P Lyman-α transition in antihydrogen. Nature, 561(7722), 211-215.
https://doi.org/10.1038/s41586-018-0435-1, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa43610
Ahmadi, M., Alves, B., Baker, C., Bertsche, W., Capra, A., Carruth, C., Cesar, C., Charlton, M., Cohen, S., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Hangst, J., Hardy, W...., & Wurtele, J. (2018). Characterization of the 1S–2S transition in antihydrogen. Nature, 557(7703), 71-75.
https://doi.org/10.1038/s41586-018-0017-2, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa39315
Ahmadi, M., Alves, B., Baker, C., Bertsche, W., Butler, E., Capra, A., Carruth, C., Cesar, C., Charlton, M., Cohen, S., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A...., & Wurtele, J. (2016). Observation of the 1S–2S transition in trapped antihydrogen. Nature, 541(7638), 506-510.
https://doi.org/10.1038/nature21040, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa36784
Eriksson, S. (2018). Precision measurements on trapped antihydrogen in the ALPHA experiment. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 376(2116), 20170268
https://doi.org/10.1098/rsta.2017.0268, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa39238
Bertsche, W., Charlton, M., Eriksson, S., Charlton, M., & Eriksson, S. (2017). Cold neutral atoms via charge exchange from excited state positronium: a proposal. New Journal of Physics, 19(5), 053020
https://doi.org/10.1088/1367-2630/aa6bb8, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa32972

All Research

Journal Articles

Ahmadi, M., Alves, B., Baker, C., Bertsche, W., Capra, A., Cohen, S., Torkzaban, C., Cesar, C., Charlton, M., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Granum, P., Hangst, J., Hayden, M...., & Collaboration), . (2024). Adiabatic expansion cooling of antihydrogen. Physical Review Research, 6(3)
https://doi.org/10.1103/physrevresearch.6.l032065, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa67727
Baker, C., Bertsche, W., Capra, A., Cesar, C., Charlton, M., Christensen, A., Collister, R., Cridland, A., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Grandemange, P., Granum, P., Hangst, J., Hayden, M...., & Collaboration), . (2024). Measurements of Penning-Malmberg trap patch potentials and associated performance degradation. Physical Review Research, 6(1)
https://doi.org/10.1103/physrevresearch.6.l012008, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa65508
Anderson, E., Baker, C., Bertsche, W., Bhatt, N., Bonomi, G., Capra, A., Carli, I., Cesar, C., Charlton, M., Christensen, A., Collister, R., Cridland, A., Quiceno, D., Eriksson, S., Evans, A., Evetts, N., Fabbri, S., Fajans, J., Ferwerda, A...., & Wurtele, J. (2023). Observation of the effect of gravity on the motion of antimatter. Nature, 621(7980), 716-722.
https://doi.org/10.1038/s41586-023-06527-1, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa64655
http://dx.doi.org/10.1038/s41586-023-06527-1
Baker, C., Bertsche, W., Capra, A., Cesar, C., Charlton, M., Christensen, A., Collister, R., Mathad, A., Eriksson, S., Evans, A., Evetts, N., Fabbri, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Grandemange, P., Granum, P., Hangst, J...., & Jones, J. (2023). Design and performance of a novel low energy multispecies beamline for an antihydrogen experiment. Physical Review Accelerators and Beams, 26(4)
https://doi.org/10.1103/physrevaccelbeams.26.040101, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa63230
http://dx.doi.org/10.1103/physrevaccelbeams.26.040101
Baker, C., Bertsche, W., Capra, A., Cesar, C., Charlton, M., Cridland, A., Eriksson, S., Evans, A., Evetts, N., Fabbri, S., Fajans, J., Friesen, T., Fujiwara, M., Grandemange, P., Granum, P., Hangst, J., Hayden, M., Hodgkinson, D., Isaac, A...., & Wurtele, J. (2021). Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production. Nature Communications, 12(1)
https://doi.org/10.1038/s41467-021-26086-1, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa58657
Baker, C., Bertsche, W., Capra, A., Carruth, C., Cesar, C., Charlton, M., Christensen, A., Collister, R., Cridland, A., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Grandemange, P., Granum, P., Hangst, J...., & Charlton, M. (2021). Laser cooling of antihydrogen atoms. Nature, 592(7852), 35-42.
https://doi.org/10.1038/s41586-021-03289-6, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa56625
Alampounti, A., Jenkins, R., & Eriksson, S. (2020). Magnetically trapped atoms in the vicinity of an optical nanofibre. Applied Physics B, 126(4), 71
https://doi.org/10.1007/s00340-020-7418-2, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa53926
Collaboration), ., Ahmadi, M., Alves, B., Baker, C., Bertsche, W., Capra, A., Carruth, C., Cesar, C., Charlton, M., Cohen, S., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Granum, P...., & Wurtele, J. (2020). Investigation of the fine structure of antihydrogen. Nature, 578(7795), 375-380.
https://doi.org/10.1038/s41586-020-2006-5, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa53592
Ahmadi, M., Alves, B., Baker, C., Bertsche, W., Capra, A., Carruth, C., Cesar, C., Charlton, M., Cohen, S., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Hangst, J., Hardy, W...., & Wurtele, J. (2018). Observation of the 1S–2P Lyman-α transition in antihydrogen. Nature, 561(7722), 211-215.
https://doi.org/10.1038/s41586-018-0435-1, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa43610
Ahmadi, M., Alves, B., Baker, C., Bertsche, W., Capra, A., Carruth, C., Cesar, C., Charlton, M., Cohen, S., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Hangst, J., Hardy, W...., & Wurtele, J. (2018). Characterization of the 1S–2S transition in antihydrogen. Nature, 557(7703), 71-75.
https://doi.org/10.1038/s41586-018-0017-2, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa39315
Eriksson, S. (2018). Precision measurements on trapped antihydrogen in the ALPHA experiment. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 376(2116), 20170268
https://doi.org/10.1098/rsta.2017.0268, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa39238
Ahmadi, M., Alves, B., Baker, C., Bertsche, W., Capra, A., Carruth, C., Cesar, C., Charlton, M., Cohen, S., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Hangst, J., Hardy, W...., & Charlton, M. (2018). Enhanced Control and Reproducibility of Non-Neutral Plasmas. Physical Review Letters, 120(2)
https://doi.org/10.1103/physrevlett.120.025001, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa37994
Ahmadi, M., Alves, B., Baker, C., Bertsche, W., Butler, E., Capra, A., Carruth, C., Cesar, C., Charlton, M., Cohen, S., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A...., & Wurtele, J. (2017). Antihydrogen accumulation for fundamental symmetry tests. Nature Communications, 8(1)
https://doi.org/10.1038/s41467-017-00760-9, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa45319
Ahmadi, M., Alves, B., Baker, C., Bertsche, W., Butler, E., Capra, A., Carruth, C., Cesar, C., Charlton, M., Cohen, S., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A...., & Eriksson, S. (2017). Observation of the hyperfine spectrum of antihydrogen. Nature, 548(7665), 66-69.
https://doi.org/10.1038/nature23446, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa45301
Bertsche, W., Charlton, M., Eriksson, S., Charlton, M., & Eriksson, S. (2017). Cold neutral atoms via charge exchange from excited state positronium: a proposal. New Journal of Physics, 19(5), 053020
https://doi.org/10.1088/1367-2630/aa6bb8, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa32972
Capra, A., Amole, C., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Butler, E., Cesar, C., Charlton, M., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayden, M., Isaac, C., Jonsell, S...., & Eriksson, S. (2016). Limit on the electric charge of antihydrogen. Hyperfine Interactions, 238(1)
https://doi.org/10.1007/s10751-016-1382-6, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa32963
Ahmadi, M., Alves, B., Baker, C., Bertsche, W., Butler, E., Capra, A., Carruth, C., Cesar, C., Charlton, M., Cohen, S., Collister, R., Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A...., & Wurtele, J. (2016). Observation of the 1S–2S transition in trapped antihydrogen. Nature, 541(7638), 506-510.
https://doi.org/10.1038/nature21040, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa36784
Ahmadi, M., Baquero-Ruiz, M., Bertsche, W., Butler, E., Capra, A., Carruth, C., Cesar, C., Charman, A., Evans, L., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayden, M., Ishida, A...., & Eriksson, S. (2016). An improved limit on the charge of antihydrogen from stochastic acceleration. Nature, 529(7586), 373-376.
https://doi.org/10.1038/nature16491, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa25943
Gutierrez, A., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Burrows, C., Butler, E., Capra, A., Cesar, C., Charlton, M., Dunlop, R., Eriksson, S., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Hangst, J., Hardy, W., Hayden, M...., & Zhmoginov, A. (2015). Antiproton cloud compression in the ALPHA apparatus at CERN. Hyperfine Interactions, 235(1-3), 21-28.
https://doi.org/10.1007/s10751-015-1202-4, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa24055
Pérez, P., Banerjee, D., Biraben, F., Brook-Roberge, D., Charlton, M., Cladé, P., Comini, P., Crivelli, P., Dalkarov, O., Debu, P., Douillet, A., Dufour, G., Dupré, P., Eriksson, S., Froelich, P., Grandemange, P., Guellati, S., Guérout, R., Heinrich, J...., & Eriksson, S. (2015). The GBAR antimatter gravity experiment. Hyperfine Interactions, 233(1-3), 21-27.
https://doi.org/10.1007/s10751-015-1154-8, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa32986
Amole, C., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Butler, E., Capra, A., Cesar, C., Charlton, M., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayden, M., Isaac, C., Jonsell, S...., & Eriksson, S. (2014). An experimental limit on the charge of antihydrogen. Nature Communications, 5, 3955
https://doi.org/10.1038/ncomms4955, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa18032
http://www.nature.com/ncomms/2014/140603/ncomms4955/full/ncomms4955.html
Indelicato, P., Chardin, G., Grandemange, P., Lunney, D., Manea, V., Badertscher, A., Crivelli, P., Curioni, A., Marchionni, A., Rossi, B., Rubbia, A., Nesvizhevsky, V., Brook-Roberge, D., Comini, P., Debu, P., Dupré, P., Liszkay, L., Mansoulié, B., Pérez, P...., & van der Werf, D. (2014). The Gbar project, or how does antimatter fall?. Hyperfine Interactions, 228(1-3), 141-150.
https://doi.org/10.1007/s10751-014-1019-6, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa18706
Amole, C., Andresen, G., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Bowe, P., Butler, E., Capra, A., Carpenter, P., Cesar, C., Chapman, S., Charlton, M., Deller, A., Eriksson, S., Escallier, J., Fajans, J., Friesen, T., Fujiwara, M., Gill, D...., & Eriksson, S. (2014). The ALPHA antihydrogen trapping apparatus. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 735, 319-340.
https://doi.org/10.1016/j.nima.2013.09.043, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa18705
Charlton, M., van der Werf, D., Madsen, N., Isaac, A., & Eriksson, S. (2014). In situelectromagnetic field diagnostics with an electron plasma in a Penning–Malmberg trap. New Journal of Physics, 16(1), 013037
https://doi.org/10.1088/1367-2630/16/1/013037, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa17396
Amole, C., Andresen, G., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Burrows, C., Butler, E., Capra, A., Cesar, C., Chapman, S., Charlton, M., Deller, A., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J...., & Eriksson, S. (2013). Silicon vertex detector upgrade in the ALPHA experiment. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 732, 134-136.
https://doi.org/10.1016/j.nima.2013.05.188, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa17394
Amole, C., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Butler, E., Capra, A., Cesar, C., Chapman, S., Charlton, M., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayden, M., Isaac, C...., & Eriksson, S. (2013). Autoresonant-spectrometric determination of the residual gas composition in the ALPHA experiment apparatus. Review of Scientific Instruments, 84(6), 065110
https://doi.org/10.1063/1.4811527, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa22128
Amole, C., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Butler, E., Capra, A., Cesar, C., Charlton, M., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayden, M., Isaac, C., Jonsell, S...., & Eriksson, S. (2013). Description and first application of a new technique to measure the gravitational mass of antihydrogen. Nature Communications, 4
https://doi.org/10.1038/ncomms2787, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa14766
Amole, C., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Butler, E., Capra, A., Cesar, C., Charlton, M., Deller, A., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayden, M., Isaac, C...., & Eriksson, S. (2013). Experimental and computational study of the injection of antiprotons into a positron plasma for antihydrogen production. Physics of Plasmas, 20(4), 043510
https://doi.org/10.1063/1.4801067, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa22125
Charlton, M., Eriksson, S., Isaac, C., Madsen, N., Werf, D., van der Werf, D., & Isaac, A. (2013). Antihydrogen in a bottle. Physics Education, 48(2)-220.
https://doi.org/10.1088/0031-9120/48/2/212, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa14475
Bertsche, W., Andresen, G., Ashkezari, M., Baquero-Ruiz, M., Bowe, P., Carpenter, P., Butler, E., Cesar, C., Chapman, S., Charlton, M., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayano, R...., & Eriksson, S. (2012). Antihydrogen formation by autoresonant excitation of antiproton plasmas. Hyperfine Interactions, 212(1-3)-67.
https://doi.org/10.1007/s10751-011-0383-8, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa12762
Ashkezari, M., Andresen, G., Baquero-Ruiz, M., Bertsche, W., Bowe, P., Butler, E., Cesar, C., Chapman, S., Charlton, M., Deller, A., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayano, R...., & van der Werf, D. (2012). Progress towards microwave spectroscopy of trapped antihydrogen. Hyperfine Interactions, 212(1-3)-90.
https://doi.org/10.1007/s10751-011-0449-7, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa12763
Friesen, T., Andresen, G., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Bowe, P., Butler, E., Cesar, C., Chapman, S., Charlton, M., Eriksson, S., Fajans, J., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayano, R., Hayden, M...., & Eriksson, S. (2012). Microwave-plasma interactions studied via mode diagnostics in ALPHA. Hyperfine Interactions, 212(1-3)-123.
https://doi.org/10.1007/s10751-012-0585-8, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa12764
Amole, C., Ashkezari, M., Andresen, G., Baquero-Ruiz, M., Bertsche, W., Bowe, P., Butler, E., Cesar, C., Chapman, S., Charlton, M., Deller, A., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W...., & Eriksson, S. (2012). Alternative method for reconstruction of antihydrogen annihilation vertices. Hyperfine Interactions, 212(1-3)-107.
https://doi.org/10.1007/s10751-012-0588-5, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa12765
Butler, E., Andresen, G., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Bowe, P., Cesar, C., Chapman, S., Charlton, M., Deller, A., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayden, M...., & Eriksson, S. (2012). Trapped antihydrogen. Hyperfine Interactions, 212(1-3), 15-29.
https://doi.org/10.1007/s10751-011-0396-3, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa13700
Andresen, G., Ashkezari, M., Bertsche, W., Bowe, P., Butler, E., Cesar, C., Chapman, S., Charlton, M., Deller, A., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayden, M., Hayano, R...., & Eriksson, S. (2012). Antihydrogen annihilation reconstruction with the ALPHA silicon detector. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 684, 73-81.
https://doi.org/10.1016/j.nima.2012.04.082, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa12768
Amole, C., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Bowe, P., Butler, E., Capra, A., Cesar, C., Charlton, M., Deller, A., Donnan, P., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W...., & Eriksson, S. (2012). Resonant quantum transitions in trapped antihydrogen atoms. Nature, 483(7390), 439-443.
https://doi.org/10.1038/nature10942, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa22120
Amole, C., Andresen, G., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Butler, E., Cesar, C., Chapman, S., Charlton, M., Deller, A., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayden, M...., & Eriksson, S. (2012). Discriminating between antihydrogen and mirror-trapped antiprotons in a minimum-B trap. New Journal of Physics, 14(1)
https://doi.org/10.1088/1367-2630/14/1/015010, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa7669
Andresen, G., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Bowe, P., Butler, E., Cesar, C., Chapman, S., Charlton, M., Deller, A., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayden, M...., & Eriksson, S. (2012). The ALPHA – detector: Module Production and Assembly. Journal of Instrumentation, 7(01), C01051-C01051.
https://doi.org/10.1088/1748-0221/7/01/C01051, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa12761
Andresen, G., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Bowe, P., Butler, E., Cesar, C., Charlton, M., Deller, A., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayano, R., Hayden, M...., & Eriksson, S. (2011). Confinement of antihydrogen for 1,000 seconds. Nature Physics, 7(7), 558-564.
https://doi.org/10.1038/nphys2025, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa7392
Andresen, G., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Bowe, P., Butler, E., Cesar, C., Chapman, S., Charlton, M., Deller, A., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayden, M...., & Eriksson, S. (2011). Centrifugal Separation and Equilibration Dynamics in an Electron-Antiproton Plasma. Physical Review Letters, 106(14)
https://doi.org/10.1103/PhysRevLett.106.145001, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa7409
Laidler, C., Eriksson, S., & Eriksson, S. (2011). Microwave sidebands for atomic physics experiments by period one oscillation in optically injected diode lasers. EPL (Europhysics Letters), 96(5), 53001
https://doi.org/10.1209/0295-5075/96/53001, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa7732
Andresen, G., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Bowe, P., Butler, E., Cesar, C., Chapman, S., Charlton, M., Deller, A., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayden, M...., & Eriksson, S. (2010). Trapped antihydrogen. Nature, 468(7324), 673-676.
https://doi.org/10.1038/nature09610, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa1110
Baumgärtner, F., Sewell, R., Eriksson, S., Llorente-Garcia, I., Dingjan, J., Cotter, J., Hinds, E., & Eriksson, S. (2010). Measuring Energy Differences by BEC Interferometry on a Chip. Physical Review Letters, 105(24), 243003
https://doi.org/10.1103/PhysRevLett.105.243003, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa1123
Sewell, R., Dingjan, J., Baumgärtner, F., Llorente-García, I., Eriksson, S., Hinds, E., Lewis, G., Srinivasan, P., Moktadir, Z., Gollasch, C., Kraft, M., & Eriksson, S. (2010). Atom chip for BEC interferometry. Journal of Physics B: Atomic, Molecular and Optical Physics, 43(5), 051003
https://doi.org/10.1088/0953-4075/43/5/051003, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa1124
Trupke, M., Goldwin, J., Darquié, B., Dutier, G., Eriksson, S., Ashmore, J., Hinds, E., & Eriksson, S. (2007). Atom Detection and Photon Production in a Scalable, Open, Optical Microcavity. Physical Review Letters, 99(6)
https://doi.org/10.1103/PhysRevLett.99.063601, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa1597
Trupke, M., Ramirez-Martinez, F., Curtis, E., Ashmore, J., Eriksson, S., Hinds, E., Moktadir, Z., Gollasch, C., Kraft, M., Vijaya Prakash, G., Baumberg, J., & Eriksson, S. (2006). Pyramidal micromirrors for microsystems and atom chips. Applied Physics Letters, 88(7), 071116
https://doi.org/10.1063/1.2172412, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20091
Trupke, M., Hinds, E., Eriksson, S., Curtis, E., Moktadir, Z., Kukharenka, E., Kraft, M., & Eriksson, S. (2005). Microfabricated high-finesse optical cavity with open access and small volume. Applied Physics Letters, 87(21), 211106
https://doi.org/10.1063/1.2132066, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa1596
Sinclair, C., Curtis, E., Garcia, I., Retter, J., Hall, B., Eriksson, S., Sauer, B., Hinds, E., & Eriksson, S. (2005). Bose-Einstein condensation on a permanent-magnet atom chip. Physical Review A, 72(3)
https://doi.org/10.1103/PhysRevA.72.031603, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa1595
Gollasch, C., Moktadir, Z., Kraft, M., Trupke, M., Eriksson, S., Hinds, E., & Eriksson, S. (2005). A three-dimensional electrostatic actuator with a locking mechanism for microcavities on atom chips. Journal of Micromechanics and Microengineering, 15(7), S39-S46.
https://doi.org/10.1088/0960-1317/15/7/006, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20094
Sinclair, C., Retter, J., Curtis, E., Hall, B., Llorente Garcia, I., Eriksson, S., Sauer, B., Hinds, E., & Eriksson, S. (2005). Cold atoms in videotape micro-traps. The European Physical Journal D, 35(1), 105-110.
https://doi.org/10.1140/epjd/e2005-00088-6, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20092
Eriksson, S., Trupke, M., Powell, H., Sahagun, D., Sinclair, C., Curtis, E., Sauer, B., Hinds, E., Moktadir, Z., Gollasch, C., Kraft, M., & Eriksson, S. (2005). Integrated optical components on atom chips. The European Physical Journal D, 35(1), 135-139.
https://doi.org/10.1140/epjd/e2005-00092-x, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20093
Llorente-Garcia, I., Sinclair, C., Curtis, E., Eriksson, S., Sauer, B., Hinds, E., & Eriksson, S. (2005). Permanent-magnet atom chips for the study of long, thin atom clouds. Journal of Physics: Conference Series, 19, 70-73.
https://doi.org/10.1088/1742-6596/19/1/011, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20095
Sinclair, C., Curtis, E., Retter, J., Hall, B., Garcia, I., Eriksson, S., Sauer, B., Hinds, E., & Eriksson, S. (2005). Preparation of a Bose–Einstein condensate on a permanent-magnet atom chip. Journal of Physics: Conference Series, 19, 74-77.
https://doi.org/10.1088/1742-6596/19/1/012, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20096
Eriksson, S., Ramirez-Martinez, F., Curtis, E., Sauer, B., Nutter, P., Hill, E., Hinds, E., & Eriksson, S. (2004). Micron-sized atom traps made from magneto-optical thin films. Applied Physics B, 79(7), 811-816.
https://doi.org/10.1007/s00340-004-1655-7, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20097
Eriksson, S. (2002). Dependence of the experimental stability diagram of an optically injected semiconductor laser on the laser current. Optics Communications, 210(3-6), 343-353.
https://doi.org/10.1016/S0030-4018(02)01809-6, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20098
Eriksson, S. & Lindberg, Å. (2002). Observations on the dynamics of semiconductor lasers subjected to external optical injection. Journal of Optics B: Quantum and Semiclassical Optics, 4(2), 149-154.
https://doi.org/10.1088/1464-4266/4/2/311, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20099
Eriksson, S. & Lindberg, Å. (2001). Periodic oscillation within the chaotic region in a semiconductor laser subjected to external optical injection. Optics Letters, 26(3), 142
https://doi.org/10.1364/OL.26.000142, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20100
Eriksson, S., Lindberg, Å., Ståhlberg, B., & Eriksson, S. (1999). A simple extended cavity diode laser for spectroscopy around 640 nm. Optics & Laser Technology, 31(6), 473-477.
https://doi.org/10.1016/S0030-3992(99)00099-7, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20101

Authored Books

Charlton, M., Eriksson, S., & Shore, G. (2020). Antihydrogen and Fundamental Physics Springer International Publishing.
https://doi.org/10.1007/978-3-030-51713-7, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa54802
http://dx.doi.org/10.1007/978-3-030-51713-7

Conference Contributions

Banerjee, D., Biraben, F., Charlton, M., Clade, P., Comini, P., Crivelli, P., Dalkarov, O., Debu, P., Dodd, L., Douillet, A., Dufour, G., Dupre, P., Eriksson, S., Froelich, P., Grandemange, P., Guellati, S., Guerout, R., Heinrich, J., Hervieux, P...., & Eriksson, S. (2016). Towards a test of the weak equivalence principle of gravity using anti-hydrogen at CERN. (pp. 1-2). 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016).
https://doi.org/10.1109/CPEM.2016.7540781, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa32984
Friesen, T., Amole, C., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Bowe, P., Butler, E., Capra, A., Cesar, C., Charlton, M., Deller, A., Evetts, N., Eriksson, S., Fajans, J., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W...., & Eriksson, S. (2013). Electron plasmas as a diagnostic tool for hyperfine spectroscopy of antihydrogen. In AIP Conference Proceedings (pp. 123-133).
https://doi.org/10.1063/1.4796068, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa14623
Charlton, M., Andresen, G., Ashkezari, M., Baquero-Ruiz, M., Bertsche, W., Bowe, P., Butler, E., Carpenter, P., Cesar, C., Chapman, S., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M., Gill, D., Gutierrez, A., Hangst, J., Hardy, W., Hayano, R...., & Eriksson, S. (2012). Antiparticle plasmas for antihydrogen trapping. (pp. 7-16).
https://doi.org/10.1063/1.4707848, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa12767
Gollasch, C., Moktadir, Z., Lewis, G., Kraft, M., Trupke, M., Eriksson, S., Hinds, E., & Eriksson, S. (2007). Integration of a tunable optical micro-cavity for single atom detection on an atom chip. (pp. 1-2).
https://doi.org/10.1109/QELS.2007.4431608, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20088
Gollasch, C., Moktadir, Z., Lewis, G., Kraft, M., Trupke, M., Eriksson, S., Hinds, E., & Eriksson, S. (2006). MEMS actuators for aligning and tuning optical micro cavities on atom chips. (pp. 273-280).
https://doi.org/10.1049/ic:20060469, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20089
Gollasch, C., Moktadir, Z., Lewis, G., Kraft, M., Trupke, M., Hinds, E., & Eriksson, S. (2006). MEMS actuators for aligning and tuning optical micro cavities on atom chips. In Institution of Engineering and Technology Seminar on MEMS Sensors and Actuators, ICEPT
SU Repository: https://cronfa.swan.ac.uk/Record/cronfa20090

Supervision

On Be+ - Assisted Antihydrogen Formation (current)

PhD

Other supervisor: Prof Niels Madsen
Positronium Physics (current)

PhD

Other supervisor: Dr Aled Isaac
Towards a Precision Measurement of the 1S-2S Transition in Antihydrogen (current)

PhD

Other supervisor: Prof Niels Madsen
Enhanced diagnostics using laser cooled Be+ ions for antihydrogen synthesis and studies (current)

PhD

Other supervisor: Prof Niels Madsen
Antihydrogen spectroscopy: towards observing fluorescence and beyond n = 2 (current)

PhD

Other supervisor: Prof Niels Madsen
Laser-cooled Be+ for improved antihydrogen trapping and magnetometry (awarded 2023)

PhD

Other supervisor: Prof Niels Madsen
A proton source in the ALPHA apparatus for precision measurements of antihydrogen and hydrogen (awarded 2023)

PhD

Other supervisor: Prof Niels Madsen
A Preliminary Study of the Effect of the Chirped Rotating Wall on a Positron Cloud (awarded 2023)

MPhil

Other supervisor: Dr Aled Isaac

Taught Modules

PH-306 Atomic Physics I

This course describes the application of quantum mechanics to atomic structure, together with the implications for spectroscopy. The electronic structure of hydrogen (including spin, fine structure and hyperfine structure), helium and alkali metals will be discussed from first principles in quantum mechanics. The effect on energy levels of applied magnetic fields (Zeeman effect) is calculated in perturbation theory. Practical examples of spectroscopy are briefly described.
PH-M10 Atomic and Quantum Optics III

This module deepens the student's understanding of atomic physics and quantum optics to a level which enables the student to participate under guidance in a research group involved in cutting edge research in the field.

Professor Stefan Eriksson

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About

Areas Of Expertise

Career Highlights

Publications

Research Highlights

All Research

Journal Articles

Authored Books

Conference Contributions

Supervision

On Be+ - Assisted Antihydrogen Formation (current)

Positronium Physics (current)

Towards a Precision Measurement of the 1S-2S Transition in Antihydrogen (current)

Enhanced diagnostics using laser cooled Be+ ions for antihydrogen synthesis and studies (current)

Antihydrogen spectroscopy: towards observing fluorescence and beyond n = 2 (current)

Laser-cooled Be+ for improved antihydrogen trapping and magnetometry (awarded 2023)

A proton source in the ALPHA apparatus for precision measurements of antihydrogen and hydrogen (awarded 2023)

A Preliminary Study of the Effect of the Chirped Rotating Wall on a Positron Cloud (awarded 2023)

Taught Modules

PH-306 Atomic Physics I

PH-M10 Atomic and Quantum Optics III