Scalable Neutral Atom Quantum Computer with Interaction on Demand: Proposal for Selective Application of Two-Qubit Gate
Scalable Neutral Atom Quantum Computer with Interaction on Demand: Proposal for Selective Application of Two-Qubit Gate
复制标题
按需交互的可扩展中性原子量子计算机：二量子位门选择性应用的提议
DOI：
10.1143/jpsj.80.114003
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
T. Ohmi
中科院分区：
文献类型：
--
作者：
E. H. Lapasar;K. Kasamatsu;Y. Kondo;M. Nakahara;T. Ohmi
我们提出了一个可扩展的中性原子量子计算机，通过选择性的双量子比特门操作实现按需相互作用。原子被近场菲涅耳衍射光的晶格捕获，使得每个陷阱捕获单个原子。单量子比特门操作是通过施加到单个原子上的门控激光束来实现的。任意一对原子之间的双量子比特门操作是通过将这些原子发送到依赖于状态的光学晶格并使它们碰撞来实现的，使得特定的双量子比特状态获得动力学相位。我们给出了相应的数值评估这些过程中，我们估计的上界的两个量子位门的操作时间和相应的门保真度。我们的建议是可行的冷原子气体，MEMS，纳米光刻，和光学的各个领域的现有技术。
We propose a scalable neutral atom quantum computer with an on-demand interaction through aselectivetwo-qubit gate operation. Atoms are trapped by a lattice of near field Fresnel diffraction lights so that each trap captures a single atom. One-qubit gate operation is implemented by a gate control laser beam which is applied to an individual atom. Two-qubit gate operation between an arbitrary pair of atoms is implemented by sending these atoms to a state-dependent optical lattice and making them collide so that a particular two-qubit state acquires a dynamical phase. We give numerical evaluations corresponding to these processes, from which we estimate the upper bound of a two-qubit gate operation time and corresponding gate fidelity. Our proposal is feasible within currently available technology developed in cold atom gas, MEMS, nanolithography, and various areas in optics.