Clover leaf by Scott Robinson on Flickr

Quantum mechanics explains efficiency of photosynthesis

Light-gathering macromolecules in plant cells transfer energy by taking advantage of molecular vibrations whose physical descriptions have no equivalents in classical physics, according to the first unambiguous theoretical evidence of quantum effects in photosynthesis published today in the journal Nature Communications. More...

Published: Jan 9, 2014 3:48:33 PM

Free Electron Lasers and Attosecond Light Sources Conference

UCL is hosting a conference on Free Electron Laser and Attosecond-Strong Field Science from June 30 to July 2 2014 at UCL. The preliminary  web-page for the conference is now live at More...

Published: Oct 1, 2013 2:24:13 PM

Macroscopic and microscopic work.

Quantum engines must break down

Our present understanding of thermodynamics is fundamentally incorrect if applied to small systems and needs to be modified, according to new research from University College London (UCL) and the University of Gdańsk. The work establishes new laws in the rapidly emerging field of quantum thermodynamics. More...

Published: Jun 27, 2013 9:40:58 AM


Our research is centred around the study of atoms and molecules in highly excited Rydberg states. In particular we are interested in exploiting samples in these states for:

  1. Applications in quantum information processing
  2. Studies of cold molecules
  3. Experiments with antihydrogen.

Summaries of my research which has been highlighted in the American Physical Society's publication Physics can be found in the following articles:

'Molecules on a string', A. Marian and B. Friedrich, Physics 2, 76 (2009)

'Getting a handle on difficult atoms', H. L. Bethlem, Physics 1, 25 (2008)