Controlled state transfer in a Heisenberg spin chain by periodic drives.
Controlled state transfer in a Heisenberg spin chain by periodic drives.
复制标题
通过周期性驱动控制海森堡自旋链中的状态转移
DOI:
10.1038/s41598-018-31552-w
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发表时间:
2018-09-10
影响因子:
4.6
通讯作者:
Yi XX
中科院分区:
文献类型:
--
作者:
Shan HJ;Dai CM;Shen HZ;Yi XX
The spin chain is a system that has been widely studied for its quantum phase transition. It also holds potential for practical application in quantum information, including quantum communication and quantum computation. In this paper, we propose a scheme for conditional state transfer in a HeisenbergXXZspin chain. In our scheme, the absence or presence of a periodic driving potential results in either a perfect state transfer between the input and output ports, or a complete blockade at the input port. This scheme is formalized by deriving an analytical expression of the effective Hamiltonian for the spin chain subject to a periodic driving field in the high-frequency limit. The influence of the derivation of the optimal parameter on the performance of the state transfer is also examined, showing the robustness of the spin chain for state transfer. In addition, the collective decoherence effect on the fidelity of state transfer is discussed. The proposed scheme paves the way for the realization of integrated quantum logic elements, and may find application in quantum information processing.
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