Vibrational effects on the formation of quantum W states

被引:0
|
作者
Mendonca, H. G. [1 ]
Souza, F. M. [1 ]
机构
[1] Univ Fed Uberlandia, Inst Fis, BR-38400902 Uberlandia, MG, Brazil
关键词
QUBIT; SPIN; ENTANGLEMENT; OSCILLATIONS; GENERATION; CIRCUITS; GATE;
D O I
10.1209/0295-5075/134/40001
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We theoretically investigate the formation of W states in a tripartite system composed of three charge qubits coupled to vibrational modes. The electromechanical coupling is responsible for second-order virtual processes that result in an effective electron-electron interaction between neighbor qubits, which leads to the formation of W states. Based on the Lang-Firsov transformation and perturbation theory, we analytically solve the quantum dynamics, providing a mathematical expression for the maximally entangled W state. Dephasing is also taken into account, paying particular attention to the robustness of bipartite entanglement against local dephasing processes. Copyright (C) 2021 EPLA
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页数:7
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