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(Phys.org) -- The famous physicist Niels Bohr first conceived of the notion of quantum jumps, or quantum leaps, in 1913. Bohr understood quantum jumps as objective events in which an atom emits or absorbs a photon, causing an electron to jump from one energy level – or quantum state – to another inside the atom.

(PhysOrg.com) -- A series of neutron scattering experiments at Oak Ridge National Laboratory and other research centers is exploring the key question about a long-sought quantum state of matter called supersolidity: Does it exist?

Xi-Jun Ren and Yang Xiang from Henan Universities in China, in collaboration with Heng Fan at the Institute of Physics of the Chinese Academy of Sciences, have produced a theory for a quantum cloning machine able to produce several copies of the state of a particle at atomic or sub-atomic scale, or quantum state, in an article about to be published in EPJ D

A team of EU-funded researchers has, for the first time, successfully carried out a constant stabilisation experiment of a quantum state - something Albert Einstein himself once dreamt of.

(PhysOrg.com) -- A constant stabilization experiment of a quantum state has been successfully carried out for the first time by a team from the Laboratoire Kastler Brossel headed by Serge Haroche. The researchers succeeded in maintaining a constant number of photons in a high-quality microwave cavity. The results of their study are published in the online journal Nature on September 1, 2011.

(PhysOrg.com) -- Physics researchers working at the National Research Council in Canada have succeeded in developing a way to directly measure the wavefunction of a photon. The technique, as described in their paper published in Nature, combines both strong and weak measurements, and offers researchers a new tool for use in understanding the intricacies of quantum mechanics

(PhysOrg.com) -- A data memory can hardly be any smaller: researchers working with Gerhard Rempe at the Max Planck Institute of Quantum Optics in Garching have stored quantum information in a single atom. The researchers wrote the quantum state of single photons, i.e. particles of light, into a rubidium atom and read it out again after a certain storage time