In Austria, Rainer Blatt and Hartmut Haeffner of the University of Innsbruck and their colleagues relied on a similar technique to produce an entangled state of eight calcium ions.

• 奥地利印斯布鲁克大学的布拉特（RainerBlatt）、海夫纳（HartmutHaeffner）及其同事，也使用类似的技术制造出八个钙离子的叠加态。