Quantum Information Processing with Two-Dimensional Atomic Arrays

二维原子阵列的量子信息处理

• 批准号: 0205236
• 负责人: Mark Saffman
• 金额: $ 203.2万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0205236&HistoricalAwards=false
• 关键词: Quantum; Information; Processing; Two; Dimensional

This ITR proposal supports a focused and coordinated effort over five years directed toward creating a 32 qubit quantum processor using individually addressable neutral Rb atoms trapped by laser beams on a two-dimensional lattice. It builds on recent very promising, but experimentally undemonstrated, theoretical concepts about manipulating the quantum coupling between atoms using lasers and highly excited atomic states. The team will use a reconfigurable atomic lattice defined by the beams from holographic optical elements. With a site to site spacing of 7 microns each qubit is individually addressable. Qubits are represented by hyperfine ground state levels and arbitrary state vector rotations are performed using laser pulses. The conditional two-qubit interaction that is needed for a complete set of logical primitives is achieved by exciting to a high lying atomic Rydberg level. A novel aspect of the implementation of these concepts is the exploitation of the dipole-blockade to allow massively sub-Poissonian loading of the qubit sites. The project is a collaboration between the Physics and Computer Sciences departments at The University of Wisconsin-Madison and the Electrical Engineering department at The University of Colorado Boulder.

ITR的提案支持在五年内集中和协调努力，旨在使用激光束捕获的二维晶格上的可单独寻址的中性Rb原子创建32量子比特量子处理器。它建立在最近非常有前途的，但实验上未经证实的，关于操纵原子之间的量子耦合使用激光和高度激发的原子状态的理论概念。 该团队将使用由全息光学元件的光束定义的可重新配置的原子晶格。在7微米的位置间距的情况下，每个量子位是可单独寻址的。量子比特由超精细基态能级表示，并使用激光脉冲进行任意状态矢量旋转。一个完整的逻辑基元集所需的条件两量子比特相互作用是通过激发到高的原子里德伯能级来实现的。 实现这些概念的一个新方面是利用偶极封锁来允许量子比特位点的大规模亚泊松加载。该项目是威斯康星大学麦迪逊分校物理和计算机科学系与科罗拉多博尔德大学电气工程系之间的合作。