Steven Hoekstra


Contact

I am an experimental physicist specialised in the development and application of precision measurement techniques to explore the limits of particle physics. In my group we perform experiments with small quantum systems (atoms, ions, molecules) and nanoparticles. The main tools we use to study these particles are lasers, and external electric and magnetic fields. The experiments we do are typically in a very well controlled environment, shielded from all unwanted background. By doing this, the subtle effects of quantum physics become visible, and we can use these atoms, ions, molecules and nanoparticles for a range of exciting experiments. 
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There are currently various possibilities for master research projects in my group. Also, there are a number of openings for PhD positions, and postdocs in this academic year.  Contact me if you are interest to talk about possibilities!

Projects


NL-eEDM


Our research program to measure the electron's electric dipole moment using a cold, slow and intense beam of BaF molecules


Levitated nanospheres


We optically levitate and cool nanospheres, to explore their use as sensitive sensors.

Publications


Novel spin-precession method for sensitive EDM searches


A. Boeschoten, V. R. Marshall, T. B. Meijknecht, A. Touwen, H. L. Bethlem, A. Borschevsky, S. Hoekstra, J. W. F. van Hofslot, K. Jungmann, M. C. Mooij, R. G. E. Timmermans, W. Ubachs, L. Willmann


arXiv:2303.06402, 2023


Opportunities for Fundamental Physics Research with Radioactive Molecules


Gordon Arrowsmith-Kron, Michail Athanasakis-Kaklamanakis, Mia Au, Jochen Ballof, Robert Berger, Anastasia Borschevsky, Alexander A. Breier, Fritz Buchinger, Dmitry Budker, Luke Caldwell, Christopher Charles, Nike Dattani, Ruben P. de Groote, David DeMille, Timo Dickel, Jacek Dobaczewski, Christoph E. Düllmann, Ephraim Eliav, Jon Engel, Mingyu Fan, Victor Flambaum, Kieran T. Flanagan, Alyssa Gaiser, Ronald Garcia Ruiz, Konstantin Gaul, Thomas F. Giesen, Jacinda Ginges, Alexander Gottberg, Gerald Gwinner, Reinhard Heinke, Steven Hoekstra, Jason D. Holt, Nicholas R. Hutzler, Andrew Jayich, Jonas Karthein, Kyle G. Leach, Kirk Madison, Stephan Malbrunot-Ettenauer, Takayuki Miyagi, Iain D. Moore, Scott Moroch, Petr Navrátil, Witold Nazarewicz, Gerda Neyens, Eric Norrgard, Nicholas Nusgart, Lukáš F. Pašteka, Alexander N. Petrov, Wolfgang Plass, Roy A. Ready, Moritz Pascal Reiter, Mikael Reponen, Sebastian Rothe, Marianna Safronova, Christoph Scheidenberger, Andrea Shindler, Jaideep T. Singh, Leonid V. Skripnikov, Anatoly V. Titov, Silviu-Marian Udrescu, Shane G. Wilkins, Xiaofei Yang


ArXiv, 2023, pp. arXiv:2302.02165


Impacts of Problem-Based Instruction on Students’ Beliefs about Physics and Learning Physics


May Lee, Cormac Larkin, Steven Hoekstra


Education Sciences, vol. 13, 2023, p. 321


Electric dipole moments and the search for new physics


Ricardo Alarcon, et al


arXiv:2203.08103, 2022


Benchmarking of the Fock-space coupled-cluster method and uncertainty estimation: Magnetic hyperfine interaction in the excited state of BaF


The NL-eEDM collaboration:, Malika Denis, Pi A B Haase, Maarten C Mooij, Yuly Chamorro, Parul Aggarwal, Hendrick L Bethlem, Alexander Boeschoten, Anastasia Borschevsky, Kevin Esajas, Yongliang Hao, Steven Hoekstra, Joost W F van Hofslot, Virginia R Marshall, Thomas B Meijknecht, Rob G E Timmermans, Anno Touwen, Wim Ubachs, Lorenz Willmann, Yanning Yin


Physical Review A, vol. 105(5), 2022, p. 052811


View all

Courses


Electricity and Magnetism

1st year physics, applied physics and astronomy

~340 students


Waves and Optics

2nd year physics, applied physics and astronomy

~190 students


From small to large to life

~25 students, twice a year.

Theses


Media

Our work in the media

Our work in the media

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