Theorists show that two atoms in an optical cavity can absorb the same photon.

RIKEN researchers show that the dynamical Casimir effect should be within reach of state-of-the-art optomechanical systems

In quantum electrodynamics, the choice of gauge (i.e. specific mathematical formalism used to regulate degrees of freedom) can greatly influence the form of light-matter interactions. Interestingly, however, the “gauge invariance” principle implies that all physical results should be independent fro…

Process could be used as a qubit in future quantum-information processes

(Phys.org)—A small team of researchers with affiliations to institutions in Italy, Japan and the U.S. has created a simulation that suggests that it should be possible for a single photon to simultaneously excite two atoms. In their paper published in the open access journal Physical Review Letters,…