Olmschenk S, Matsukevich D N, Maunz P, Hayes D, Duan L-M, Monroe C
Joint Quantum Institute (JQI) and Department of Physics, University of Maryland, College Park, MD 20742, USA.
Science. 2009 Jan 23;323(5913):486-9. doi: 10.1126/science.1167209.
Quantum teleportation is the faithful transfer of quantum states between systems, relying on the prior establishment of entanglement and using only classical communication during the transmission. We report teleportation of quantum information between atomic quantum memories separated by about 1 meter. A quantum bit stored in a single trapped ytterbium ion (Yb+) is teleported to a second Yb+ atom with an average fidelity of 90% over a replete set of states. The teleportation protocol is based on the heralded entanglement of the atoms through interference and detection of photons emitted from each atom and guided through optical fibers. This scheme may be used for scalable quantum computation and quantum communication.
量子隐形传态是系统之间量子态的可靠转移,它依赖于事先建立的纠缠,并且在传输过程中仅使用经典通信。我们报告了在相距约1米的原子量子存储器之间实现量子信息的隐形传态。存储在单个囚禁镱离子(Yb+)中的一个量子比特被隐形传态至另一个Yb+原子,在一组完备的态上平均保真度达到90%。该隐形传态协议基于通过干涉和探测每个原子发射并通过光纤传导的光子来实现原子的预示纠缠。此方案可用于可扩展的量子计算和量子通信。