Gulde S, Häffner H, Riebe M, Lancaster G, Becher C, Eschner J, Schmidt-Kaler F, Chuang I L, Blatt R
Institut für Experimentalphysik, Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria.
Philos Trans A Math Phys Eng Sci. 2003 Jul 15;361(1808):1363-74. doi: 10.1098/rsta.2003.1206.
Quantum information processing is performed with single trapped Ca(+) ions, stored in a linear Paul trap and laser-cooled to the ground state of their harmonic quantum motion. Composite laser-pulse sequences were used to implement SWAP gate, phase gate and controlled-NOT gate operations. Stark shifts on the quantum-bit transitions were precisely measured and compensated. For a demonstration of quantum information processing, a Deutsch-Jozsa algorithm has been implemented using two quantum bits encoded on a single ion.
量子信息处理是通过单个被俘获的Ca(+)离子来进行的，这些离子存储在一个线性保罗阱中，并通过激光冷却到其简谐量子运动的基态。复合激光脉冲序列被用于实现交换门、相位门和受控非门操作。精确测量并补偿了量子比特跃迁上的斯塔克位移。为了演示量子信息处理，已经使用编码在单个离子上的两个量子比特实现了德伊奇-若萨算法。
