Generation of Greenberger-Horne-Zeilinger and W states for stationary qubits in a spin network via resonance scattering

被引：14
作者：
Jin, L. [1 ]
Song, Z. [1 ]
机构：
[1] Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China
来源：
PHYSICAL REVIEW A | 2009年 / 79卷 / 04期
关键词：
probability; quantum computing; quantum entanglement; ENTANGLED STATES; DISTANT ATOMS; QUANTUM STATE; DYNAMICS; CHAIN;
D O I：
10.1103/PhysRevA.79.042341
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a simple scheme to establish entanglement among stationary qubits based on the mechanism of resonance scattering between them and a single-spin-flip wave packet in designed spin network. It is found that through the natural dynamical evolution of an incident single-spin-flip wave packet in a spin network and the subsequent measurement of the output single-spin-flip wave packet, multipartite entangled states among n stationary qubits, Greenberger-Horne-Zeilinger (GHZ), and W states can be generated with success probabilities P-GHZ=2/parallel to 1+t(-n)parallel to(2) and P-W=parallel to t parallel to(2)/n, respectively, where t is the transmission amplitude of the near-resonance scattering.
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页数：8
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