Belfast. An experiment conducted in the Quantum Optics lab of La Sapienza University, in collaboration with Roma Tre and Queen’s University in Belfast, has shown that if it were possible to have two nano-engines tied together by entanglement (a type of relationship that exists only for quantum particles that causes two objects to be strictly dependent on each other even if spatially separated); this would lead to the extraction of more work than from two independent nano-motors. The researchers trained photons to simulate the activity of a nano-engine and have seen that it is possible to distinguish whether the engines are “entangled” or not from how much work they have extracted. (9Colonne)