Transfer of high-dimensional quantum state through an XX Z-Heiseitherg quantum spin chain

被引:3
作者
Yang, Zhe [1 ,2 ]
Gao, Ming [1 ,2 ]
Qin, Wei [3 ]
机构
[1] Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
[3] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China
来源
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2015年 / 29卷 / 29期
关键词
Spin chain; quantum state transfer; high fidelity; thermal field; OPTIMAL CLONING; QUBITS; SPACE;
D O I
10.1142/S0217979215502070
中图分类号
O59 [应用物理学];
学科分类号
摘要
In this paper; we propose and analyze an efficient high-dimensional quantum state transfer (QST) scheme through an XXZ-Heisenberg spin chain in an inhomogeneous magnetic field. By the use of a combination of coherent quantum coupling and free spin wave approximation, pure unitary evolution results in a perfect high-dimensional swap operation between two remote quantum registers mediated by a uniform quantum data bus and the feasibility is confirmed by numerical simulations. Also; we observe that either the strong z-directional coupling or high quantum spin number can partly suppress the thermal excitations and protect quantum information from the thermal noises when the quantum data bus is in the thermal equilibrium state.
引用
收藏
页数:10
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