ITR: Quantum Information Processing with Ultracold Rydberg Atoms

超冷里德伯原子的量子信息处理。超冷里德伯原子具有很长的寿命，并且在远距离上具有很强的相互作用，这可能使它们成为量子信息处理的理想选择。这个项目正在通过研究和实验实现一个通用的双量子比特逻辑门来调查这种可能性，在这个逻辑门中，两个原子的状态获得一个依赖于原子相互作用时间的相位。该项目正在研究包含里德伯原子的稀疏光学晶格，这将允许在任意状态下制备良好识别的原子。原子-原子相互作用的性质，包括外部电场和磁场的影响将被研究。最后，将研究读取存储在里德伯原子中的信息的方法，包括成像荧光和选择性电离。缩放到大量的量子比特，以及光学晶格对退相干的影响，将被探索。

EIA-0082913Cote, RobinUniversity of ConnecticutITR: Quantum Information Processing with Ultracold Rydberg AtomsUltracold Rydberg atoms have long lifetimes and interact strongly at large distances, which may make them ideal for quantum information processing. This project is investigating this possibility by studying and experimentally implementing a universal two-qubit logic gate, in which a two-atom state acquires a phase that depends on the time the atoms are interacting. The project is investigating sparsely populated optical lattices containing Rydberg atoms, which will permit the preparation of well-identified atoms in arbitrary states. The properties of atom-atom interactions, including the effect of external electric and magnetic fields will be investigated. Finally, methods of reading the information stored in Rydberg atoms will be investigated, including imaged fluorescence and selective ionization. Scaling to large numbers of qubits, as well as the effects of the optical lattice on decoherence, will be explored.