Physicists Just Broke a Quantum Record, Taking Entanglement to a Spooky New Level

Science Alert  April 16, 2018
An international team of researchers (Austria, Germany) used an ion trap to confine calcium ions using a magnetic field. They used lasers to entangle the ions, creating a 20-qubit system, with each qubit encoded into the electronic state of a trapped atomic ion. Their quantum states can be individually controlled, and they were able to individually read and address each of the qubits. The team were able to get the calcium ions to entangle with two, three, or occasionally even four other calcium ions in the system… read more. Open Access TECHNICAL ARTICLE