First Evidence For Entanglement of Three Macroscopic Objects

March 4, 2005 | Source: Physics News Update

First evidence for entanglement of three macroscopic objects has been seen in a superconducting circuit built at the University of Maryland.

By examining an electrical circuit operating at temperatures near absolute zero, the researchers have found new evidence that the laws of quantum mechanics apply not just to microscopic particles such as atoms and electrons, but also to large electronic devices called superconducting quantum bits (qubits).

Superconducting circuits such as this one provide a promising route towards a practical quantum computer, which would require the entanglement of many qubits.