Experiment obtains entanglement of six light waves with a single laser

Austrian physicist Erwin Schrödinger (1887-1961), one of the giants of contemporary science, considered entanglement the most interesting property in quantum mechanics. In his view, it was this phenomenon that truly distinguished the quantum world from the classical world. Entanglement occurs when groups of particles or waves are created or interact in such a way that […]

Physicists implement a version of Maxwell’s famous thought experiment for reducing entropy

Reduced entropy in a three-dimensional lattice of super-cooled, laser-trapped atoms could help speed progress toward creating quantum computers. A team of researchers at Penn State can rearrange a randomly distributed array of atoms into neatly organized blocks, thus performing the function of a “Maxwell’s demon”—a thought experiment from the 1870s that challenged the second law […]

Researchers ‘teleport’ a quantum gate

Yale University researchers have demonstrated one of the key steps in building the architecture for modular quantum computers: the “teleportation” of a quantum gate between two qubits, on demand. The findings appear online Sept. 5 in the journal Nature. The key principle behind this new work is quantum teleportation, a unique feature of quantum mechanics […]