Formed in 2009, the Archive Team (not to be confused with the archive.org Archive-It Team) is a rogue archivist collective dedicated to saving copies of rapidly dying or deleted websites for the sake of history and digital heritage. The group is 100% composed of volunteers and interested parties, and has expanded into a large amount of related projects for saving online and digital history.
History is littered with hundreds of conflicts over the future of a community, group, location or business that were "resolved" when one of the parties stepped ahead and destroyed what was there. With the original point of contention destroyed, the debates would fall to the wayside. Archive Team believes that by duplicated condemned data, the conversation and debate can continue, as well as the richness and insight gained by keeping the materials. Our projects have ranged in size from a single volunteer downloading the data to a small-but-critical site, to over 100 volunteers stepping forward to acquire terabytes of user-created data to save for future generations.
The main site for Archive Team is at archiveteam.org and contains up to the date information on various projects, manifestos, plans and walkthroughs.
This collection contains the output of many Archive Team projects, both ongoing and completed. Thanks to the generous providing of disk space by the Internet Archive, multi-terabyte datasets can be made available, as well as in use by the Wayback Machine, providing a path back to lost websites and work.
Our collection has grown to the point of having sub-collections for the type of data we acquire. If you are seeking to browse the contents of these collections, the Wayback Machine is the best first stop. Otherwise, you are free to dig into the stacks to see what you may find.
The Archive Team Panic Downloads are full pulldowns of currently extant websites, meant to serve as emergency backups for needed sites that are in danger of closing, or which will be missed dearly if suddenly lost due to hard drive crashes or server failures.

院况简介
1949年,伴随着新中国的诞生,中国科学院成立。
作为国家在科学技术方面的最高学术机构和全国自然科学与高新技术的综合研究与发展中心,建院以来,中国科学院时刻牢记使命,与科学共进,与祖国同行,以国家富强、人民幸福为己任,人才辈出,硕果累累,为我国科技进步、经济社会发展和国家安全做出了不可替代的重要贡献。 更多简介 +
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中国科学技术大学郭光灿院士团队的李传锋、周宗权研究组基于团队原创的无噪声光子回波方案,将可集成量子存储器的存储时间从10微秒级延长至毫秒级,同时突破了传统光纤延迟线的效率。相关研究成果近日发表于《科学进展》。
光量子存储器作为克服信道损耗、构建大尺度量子网络的核心器件,其规模化应用需要实现器件的集成化,从而达到小尺寸、低功耗的目标。自2011年以来,国际上已利用多种工艺在稀土掺杂晶体中制备了可集成量子存储器。然而,由于集成器件中噪声难以滤除且存储效率受限,现有装置仅能实现在原子激发态的存储,存储时间仅为10微秒级,存储效率远低于光纤延迟线的传输效率,从根本上限制了其在远程量子通信中的实际应用。
为破解这一难题,研究人员利用飞秒激光微加工技术,在掺铕硅酸钇晶体中制备了圆对称的凹陷包层光波导,实现了基于偏振自由度的噪声滤除,并结合团队原创的无噪声光子回波量子存储方案大幅提高了存储效率,从而实现了在原子基态的自旋波可集成量子存储。
近期,团队在晶体上表面集成了共面电波导,通过施加射频磁场实现对光波导内铕离子核自旋跃迁的动力学解耦控制,从而将自旋波量子存储寿命延长至毫秒级。当光量子比特的存储时间达1.021毫秒时,其存储效率达到12.0±0.5%,这一效率远超对应延时的光纤延迟线的传输效率,充分证明了可集成量子存储器件在功能上已不可能被光纤延迟线替代。
研究人员介绍,该研究把可集成量子存储器的寿命从10微秒级提升至毫秒级,首次实现了存储效率超越光纤延迟线的突破,为可集成量子存储在长程量子网络中的实际应用奠定了坚实基础。同时,该成果展现了无噪声光子回波方案在解决长寿命量子存储信噪比问题上的巨大潜力。
相关论文信息:https://doi.org/10.1126/sciadv.adu5264
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© 1996 - 中国科学院 版权所有 京ICP备05002857号-1
京公网安备110402500047号 网站标识码bm48000002
地址:北京市西城区三里河路52号 邮编:100864
电话: 86 10 68597114(总机) 86 10 68597289(总值班室)
© 1996 - 中国科学院 版权所有
京ICP备05002857号-1
京公网安备110402500047号
网站标识码bm48000002
地址:北京市西城区三里河路52号 邮编:100864
电话:86 10 68597114(总机)
86 10 68597289(总值班室)








