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Scientists realize one of the most elementary and oldest "gedanken" experiments in modern physics, namely, excitation of a single molecule with a single photon. This paves the way for further investigations in which single photons act as carriers of quantum information to be processed by single emitters.

For the first time, researchers at the California Institute of Technology (Caltech), in collaboration with a team from the University of Vienna, have managed to cool a miniature mechanical object to its lowest possible energy state using laser light. The achievement paves the way for the development of exquisitely sensitive detectors as well as for quantum experiments that scientists have long dreamed of conducting.

Our diets are unhealthy, that much is clear. Now, an increasing number of scientists and physicians wonder if our propensity for unhealthy, obesity-inducing eating might be tied to the food choices made during our first weeks and months of life

By successfully changing the spin of a molecule, researchers have been able to perform an on/off operation for a molecular magnet. Such reversible switching paves the way for single molecule memory.