Atomic ensemble quantum information with nuclear spin

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该奖项支持利用核自旋研究量子信息的实验研究。在量子信息研究中，原子气体已经成功地应用于许多重要的领域。先前使用原子系综的实验将量子信息存储在电子自旋中。不幸的是，电子自旋很脆弱，信息很容易丢失。另一方面，核自旋相对较强。该项目将开发与核系综纠缠光子的技术，以及在核自旋中存储量子信息的技术。该项目将探索光子与原子核之间的相干性，并利用核自旋实现基于集合的量子信息实验的基本构建块。该计划的广泛影响包括培养研究生和本科生在冷原子研究、量子信息研究和许多现代技术领域，如激光、光学、高真空和低温学。这项研究的基本概念将通过互联网传播给更多的学生。潜在的实际应用包括远程安全量子加密通信的发展和量子计算机网络的能力。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This award supports experimental research investigating quantum information using nuclear spin. In quantum information research, atomic gases have been successfully used in many important applications. Prior experiments using atomic ensembles stored quantum information in electron spin. Unfortunately, electron spin is fragile, and information can be easily lost. On the other hand, nuclear spin is comparatively robust. This project will develop techniques for entangling photons with a nuclear ensemble and for storing quantum information in nuclear spin. The project will explore the coherence between photons and nuclei, and use nuclear spin to implement the basic building blocks of ensemble-based quantum information experiments.The broader impact of this program includes the training of graduate and undergraduate students in cold atom research, quantum information research, and many areas of modern technology, such as lasers, optics, high vacuum, and cryogenics. The fundamental concepts underlying the research will be disseminated to a wider audience of students using the internet. Potential practical applications include the development of long-distance secure quantum-cryptographic communication and the ability to network quantum computers.