Globally controlled quantum wires for perfect qubit transport, mirroring, and computing

被引：97

作者：

Fitzsimons, Joseph

Twamley, Jason

机构：

[1] Univ Oxford, Dept Mat, Oxford, England

[2] Macquarie Univ, Ctr Quantum Comp Technol, N Ryde, NSW 2109, Australia

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.97.090502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We describe a new design for a q wire with perfect transmission using a uniformly coupled Ising spin chain subject to global pulses. In addition to allowing for the perfect transport of single qubits, the design also yields the perfect "mirroring" of multiply encoded qubits within the wire. We further utilize this global-pulse generated perfect mirror operation as a "clock cycle" to perform universal quantum computation on these multiply encoded qubits where the interior of the q wire serves as the quantum memory while the q-wire ends perform one- and two-qubit gates.

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页数：4

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