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Personal profile
Quote
"The development of techniques to cool and trap atoms with laser light has greatly changed atomic physics research. Increasingly, applications emerge, with cold charged particle beams as a prime example."
Research profile
Edgar Vredenbregt is an associate professor with the research group Coherence and Quantum Technology at the TU/e department of Applied Physics. His research focuses on the use of atom trapping for quantum information research and to create a new class of charged particle sources, featuring ultracold electrons (10K) and ions (1mK). Both offer a new route toward high brightness by virtue of a high angular intensity. Applications of the ultracold sources are ultrafast electron diffraction and focused-ion beam instrumentation.
Ultracold ions can be extracted from a beam of laser-cooled atoms using photo-ionization, allowing for bright ion beams with a very small longitudinal energy spread (200 meV demonstrated). As a result Laser Cooled Focused Ion Beams provide a next-generation tool for observing, modifying and repairing silicon wafers, enabling milling on the 1 nanometer scale.
Rydberg atoms can fill the role of qubits with strong mutual interactions that can be harnessed to create quantum gates. A structured gas of Rydberg atoms is created by patterned laser-excitation of a trapped atomic cloud. Spectroscopy reveals effects of long-range interactions such as blockade and facilitation phenomena.
Academic background
Edgar Vredenbregt studied Applied Physics at Eindhoven University of Technology (TU/e, the Netherlands) where he received his MSc in 1986. In 1990, he obtained his PhD at TU/e in Atomic and Molecular Physics under supervision of professor Herman Beijerinck. From 1991 until 1993, he was a postdoctoral researcher at the QEX group of professor Harold Metcalf at the State University of New York at Stony Brook (USA). In 1993, he returned to TU/e to become a postdoctoral researcher in the development of intensified atomic beams. From 1995-2000, he was a fellow of the Royal Netherlands Academy of Arts and Sciences (KNAW) at TU/e, to perform research on ultra-cold collisions and intensified atomic beams. In 1998, he was a visiting research scientist with the laser cooling and trapping group at the National Institute of Standards and Technology (NIST) in Gaithersburg (USA). In 2000, Edgar Vredenbregt was appointed assistant professor at TU/e and in 2016 he was promoted to associate professor with the research group Coherence and Quantum Technology, department of Applied Physics.
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Projects
- 1 Active
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KAT-1: Rydberg Atom Quantum Computing and Simulation
Kokkelmans, S. J. J. M. F., Vredenbregt, E. J. D., Lous, R., Janse van Rensburg, D., Postema, J. J., van de Kraats, J., Guo, C., de Keijzer, R. J. P. T., van Herk, R. A. H., Venderbosch, M. L., Knottnerus, I. & Mohan, M.
1/07/20 → 31/12/25
Project: Research direct
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Investigation of Rb+milling rates using an ultracold focused ion beam
Xu, S., Li, Y. & Vredenbregt, E. J. D., 1 Jul 2022, In: Journal of Vacuum Science and Technology B. 40, 4, 7 p., 042801.Research output: Contribution to journal › Article › Academic › peer-review
Open AccessFile1 Citation (Scopus)13 Downloads (Pure) -
A rubidium focused ion beam instrument
Vredenbregt, E. J. D., Mutsaers, P. H. A., Xu, S. & Li, Y., 21 Jan 2020. 1 p.Research output: Contribution to conference › Poster
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Focused ion beam using a rubidium cold-atom ion source
Xu, S., Li, Y., Mutsaers, P. H. A. & Vredenbregt, E. J. D., 31 Aug 2020. 1 p.Research output: Contribution to conference › Poster
File35 Downloads (Pure) -
Three-level rate equations in cold, disordered Rydberg gases
Skannrup, R. V., van Weerden, T., van der Werf, Y., Johri, T., Vredenbregt, E. J. D. & Kokkelmans, S. J. J. M. F., 28 Apr 2020, In: Journal of Physics B: Atomic, Molecular and Optical Physics. 53, 8, 10 p., 084008.Research output: Contribution to journal › Article › Academic › peer-review
1 Citation (Scopus)1 Downloads (Pure) -
Three-level rate equations in cold, disordered Rydberg gases
Skannrup, R. V., Weerden, T. V., Werf, Y. V. D., Johri, T., Vredenbregt, E. J. D. & Kokkelmans, S. J. J. M. F., 15 Jan 2020, In: arXiv. 2020, 10 p., 2001.05579v1.Research output: Contribution to journal › Article › Academic
Open AccessFile45 Downloads (Pure)
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TOWARDS A HIGH RESOLUTION RB+ FIB
E.J.D. Vredenbregt (Speaker)
19 Jun 2017 → 22 Jun 2017Activity: Talk or presentation types › Contributed talk › Scientific
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workshop Postmobility Experience Sharing
Edgar Vredenbregt (Invited speaker)
12 Sept 2016Activity: Talk or presentation types › Invited talk › Scientific
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iCord_International Conference on Rydberg at Durham, Durham University, Joint Quantum Centre, Durham, UK
Edgar Vredenbregt (Invited speaker)
3 Jul 2015Activity: Talk or presentation types › Invited talk › Scientific
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PPG seminar, Quantum, Atomic, Molecular and Plasma Physics (QuAMP), Calman Learning Centre, Summer School, Newcastle University, Durham, UK
Edgar Vredenbregt (Invited speaker)
16 Sept 2014Activity: Talk or presentation types › Invited talk › Scientific
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Coldbeams: Ultra-Cold Gas for Bright Electron and Monochromatic Ion Source Workshop, October 1-3, 2012, Nimes, France
Edgar Vredenbregt (Invited speaker)
1 Oct 2012Activity: Talk or presentation types › Invited talk › Scientific
Courses
Impacts
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Ultracold ion beams
Edgar J.D. Vredenbregt (Researcher) & Rianne Sanders (Content manager)
Impact: Research Topic/Theme (at group level)
File
Thesis
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Intramultiplet mixing voor Ne**(2p53p) + He-botsingen : semiklassieke beschrijving van orientatie-effecten
Author: Vredenbregt, E. J. D., 31 May 1986Supervisor: Beijerinck, H. C. W. (Supervisor 1), Manders, M. P. I. (Supervisor 2) & Verhaar, B. J. (Supervisor 2)
Student thesis: Master
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