Robust Matter-Light Entanglement Generation and Distribution

鲁棒的物质-光纠缠的产生和分布

• 批准号: 1105994
• 负责人: Alexander Kuzmich
• 金额: $ 59万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2013-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1105994&HistoricalAwards=false
• 关键词: Robust; Matter; Light; Entanglement; Generation

A program of investigations of generation, storage, and distribution of quantum information, using individual photons and trapped ultra-cold atoms will be continued. Work in our group has previously demonstrated entanglement of spin-wave hyperfine qubits to optical qubits encoded in the polarization, spatial or frequency degrees of freedom of single photons, as well as entanglement of two remote spin-wave qubits. Most recently, quantum memory times have been extended beyond 0.1 seconds and low-noise, high-efficiency wavelength conversion between telecom and storable fields achieved. This opens a path toward long-distance atomic entanglement using light propagation in optical fibers. However to date, the success probability of the entanglement generation protocols in a given trial is always very small, as the light fields contain a large vacuum component. By exploiting the physics of Rydberg atom interactions the success probability will be increased by a factor of up to one thousand, fast, efficient deterministic single photon sources will be created, quantum gates between qubits encoded in trapped ultra-cold atoms implemented, and storage of entangled quantum states with lifetimes in excess of 1 second achieved. This activity will expedite the development of a new generation of capabilities for creation, distribution and storage of multi-qubit entangled states and contribute to future implementations of long-distance quantum repeaters and distributed quantum computing. Moreover efficient production of multi-qubit entangled states will impact fundamental physics investigations and advance quantum-enhanced technologies. The research will have a significant influence on the future development of quantum information processing, resulting in the development of new tools for light-matter entanglement generation and distribution. The project will involve extensive graduate and undergraduate student training and participation.

使用单个光子和捕获的超冷原子的量子信息的发电，存储和分布调查计划将继续进行。我们小组中的工作以前已经证明了自旋波超精细量子的纠缠与在极化，空间或频率的单光子自由度以及两个远程自旋波Qubits的纠缠中编码的光量子置量。最近，量子记忆时间已扩展到0.1秒以上，并且在电信和可存储的磁场之间的低噪声，高效率波长转换。这为使用光纤维中的光传播开辟了一条通往长距离原子纠缠的路径。但是，迄今为止，在给定试验中，纠缠生成方案的成功概率总是很小，因为光场包含大型真空成分。通过利用Rydberg Atom相互作用的物理学，将创建成功概率提高多达1000倍的百分比，即快速，有效的确定性单光子源，在实施的陷阱超冷原子中编码的量子量和实施的量子量的量子与寿命的存储中，具有超过1秒的寿命。 这项活动将加快发展新一代能力来创建，分布和存储多Qubit纠缠状态的能力，并促进将来的长距离量子中继器和分布式量子计算的实现。此外，有效生产多Qubit纠缠状态将影响基本的物理研究并提高量子增强技术。这项研究将对量子信息处理的未来发展产生重大影响，从而开发出新的工具来生成和分布。该项目将涉及广泛的研究生和本科生培训和参与。