1985 …2018
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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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Research Output 1985 2018

Energy spread of ultracold electron bunches extracted from a laser cooled gas

Franssen, J. G. H., Kromwijk, J. M., Vredenbregt, E. J. D. & Luiten, O. J., 16 Jan 2018, In : Journal of Physics B: Atomic, Molecular and Optical Physics. 51, 3, 7 p., 035007

Research output: Contribution to journalArticleAcademicpeer-review

filters
gases
shot
lasers
photoionization

Measurements of the energy distribution of a high brightness rubidium ion beam

ten Haaf, G., Wouters, S. H. W., Nijhof, D. F. J., Mutsaers, P. H. A. & Vredenbregt, E. J. D., 5 Apr 2018, In : Ultramicroscopy. 190, p. 12-20 9 p.

Research output: Contribution to journalArticleAcademicpeer-review

Rubidium
rubidium
Ion beams
Ionization
Luminance
2 Citations

Cavity-enhanced photoionization of an ultracold rubidium beam for application in focused ion beams

ten Haaf, G., Wouters, S. H. W., Mutsaers, P. H. A. & Vredenbregt, E. J. D., 13 Nov 2017, In : Physical Review A : Atomic, Molecular and Optical Physics. 96, 5, 12 p., 053412

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
rubidium
photoionization
ion beams
ionization
cavities
4 Citations

Direct magneto-optical compression of an effusive atomic beam for application in a high-resolution focused ion beam

ten Haaf, G., de Raadt, T. C. H., Offermans, G. P., van Rens, J. F. M., Mutsaers, P. H. A., Vredenbregt, E. J. D. & Wouters, S. H. W., 22 May 2017, In : Physical Review Applied. 7, 054013 (2017), p. 054013-1 -054013-12 12 p., 7

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
atomic beams
brightness
ion beams
manned orbital telescopes
high resolution
pulses
gases
lasers
electrons
crystallography

Activities 2006 2017

  • 10 Invited talk
  • 1 Contributed talk

TOWARDS A HIGH RESOLUTION RB+ FIB

Vredenbregt, E. (Speaker)
19 Jun 201722 Jun 2017

Activity: Talk or presentationContributed talkScientific

workshop Postmobility Experience Sharing

Vredenbregt, E. (Invited speaker)
12 Sep 2016

Activity: Talk or presentationInvited talkScientific

iCord_International Conference on Rydberg at Durham, Durham University, Joint Quantum Centre, Durham, UK

Vredenbregt, E. (Invited speaker)
3 Jul 2015

Activity: Talk or presentationInvited talkScientific

Coldbeams: Ultra-Cold Gas for Bright Electron and Monochromatic Ion Source Workshop, October 1-3, 2012, Nimes, France

Vredenbregt, E. (Invited speaker)
1 Oct 2012

Activity: Talk or presentationInvited talkScientific

Impacts

Ultracold ion beams

Edgar J.D. Vredenbregt (Researcher), Rianne Sanders (Content manager)

Impact: Research Topic/Theme (at group level)

File

Student theses

2D magneto-optical trap as source for cold ions

Author: Kusters, D., 31 Oct 2008

Supervisor: Vredenbregt, E. (Supervisor 1) & Reijnders, M. (Supervisor 2)

Student thesis: Master

File

A new high-brightness ion source: the atomic beam laser-cooled ion source

Author: Notermans, R., 31 Aug 2012

Supervisor: Vredenbregt, E. (Supervisor 1)

Student thesis: Master

File

Atomic Beam Laser-cooled Ion Source : towards sub-nm ion beam milling

Author: ten Haaf, G., 30 Nov 2013

Supervisor: Vredenbregt, E. (Supervisor 1) & Wouters, S. (Supervisor 2)

Student thesis: Master

File

Beam experiments on KrF, XeF, KrBr and XeBr excimer formation

Author: Vrakking, M., 31 Aug 1987

Supervisor: Vredenbregt, E. (Supervisor 1) & Beijerinck, H. (Supervisor 2)

Student thesis: Master

File

Cold atom dynamics in a magnetic trap

Author: Gommers, R., 29 Feb 2004

Supervisor: Claessens, B. (Supervisor 1), Vredenbregt, E. (Supervisor 2) & Beijerinck, H. (Supervisor 2)

Student thesis: Master

File