Department of Physics and School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
Phys Rev Lett. 2009 Dec 4;103(23):233602. doi: 10.1103/PhysRevLett.103.233602.
A Bose-Einstein condensate confined in an optical dipole trap is used to generate long-term coherent memory for light, and storage times of more than 1 s are observed. Phase coherence of the condensate as well as controlled manipulations of elastic and inelastic atomic scattering processes are utilized to increase the storage fidelity by several orders of magnitude over previous schemes. The results have important applications for creation of long-distance quantum networks and for generation of entangled states of light and matter.
处于光学偶极阱中的玻色-爱因斯坦凝聚体被用来为光生成长期相干记忆，观察到的存储时间超过 1 秒。通过控制弹性和非弹性原子散射过程，利用凝聚体的相位相干性，将存储保真度提高了几个数量级，超过了以前的方案。这些结果对于创建远距离量子网络以及产生光和物质的纠缠态具有重要的应用。
