Macroscopic Quantum Entanglement

Posted by Adam on October 4, 2009 at 4:35 PM ET

Mind Lamp fans and physics buffs might be interested in another recent Wired Magazine article about quantum entanglement effects made visible to the naked eye. Using superconductors, UCSB researchers were able to measure changes in electrical current across a distance of several millimeters, believed to be the result of entanglement effects.

Entanglement happens when the quantum state of one object depends on the quantum state of another object—even if the individual objects are physically separated. Because observation can impact the quantum state of one object, it can have a corresponding affect on another object distant in space, if they happen to be entangled. Typically quantum-scale effects fall off the radar as you move from the microscopic to the macroscopic worldbut not in this case. The experiment is a reminder of the fascinating complications surrounding nonlocality.