Speedup of quantum-state transfer by three-qubit interactions

Speedup of quantum-state transfer by three-qubit interactions
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DOI:
10.1103/physreva.73.062325
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发表时间:
2005-12
期刊:
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影响因子:
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通讯作者:
Jingfu Zhang;X. Peng;D. Suter
Jingfu Zhang;X. Peng;D. Suter
中科院分区:
其他
文献类型:
--
作者:
Jingfu Zhang;X. Peng;D. Suter

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通用量子信息处理需要单量子比特旋转和双量子比特相互作用作为最小的资源。超越这个最小方案的一个可能步骤是使用三量子位相互作用。我们考虑了这样的三量子比特相互作用,并展示了它们如何减少XY自旋链中量子态转移所需的时间。对于实验实现,我们使用液态核磁共振,其中三量子位相互作用可以通过射频脉冲序列实现。
Universal quantum information processing requires single-qubit rotations and two-qubit interactions as minimal resources. A possible step beyond this minimal scheme is the use of three-qubit interactions. We consider such three-qubit interactions and show how they can reduce the time required for a quantum state transfer in an XY spin chain. For the experimental implementation, we use liquid-state nuclear magnetic resonance, where three-qubit interactions can be implemented by sequences of radio-frequency pulses.