Robustness of coherence between two quantum dots mediated by Majorana fermions<xref rid="cpb_27_7_077102_fn1" ref-type="fn">*</xref><fn id="cpb_27_7_077102_fn1"> <label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11504106, 11247308, and 11447167) and the Fundamental Research Funds for the Central Universities of China (Grant Nos. 2018MS049 and 2018MS057).</p></fn>

Robustness of coherence between two quantum dots mediated by Majorana fermions* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 11504106, 11247308, and 11447167) and the Fundamental Research Funds for the Central Universities of China (Grant Nos. 2018MS049 and 2018MS057).

Chen Liang^†, Zhang Ye-Qi, Han Rong-Sheng

(color online) Time evaluation of the quantum correlations between two QDs mediated by different kinds of fermions. The parameters are set as follows: tunneling coupling λ₁ = λ₂ = λ, tunneling rate between the QDs and the leads Γ = 0, (a) QD energies ε_d1 = ε_d2 = 0 and inter-MF coupling ε_M = 0.5λ for two QDs mediated by a pair of MFs, (b) ε_d1 = ε_d2 = 0 and ε_M = 0 for two QDs mediated by a pair of MFs, (c) ε_d1 = ε_d2 = 0.25λ and energy ε_c = 0.5λ for two QDs mediated by a regular fermion, (d) ε_d1 = ε_d2 = 0 and ε_c = 0 for two QDs mediated by a regular fermion, (e) ε_d1 = ε_d2 = 0 and ε_c1 = ε_c2 = 0 for two QDs mediated by a pair of regular fermions, (f) ε_d1 = ε_d2 = 0 and ε_c1 = ε_c2 = 0.5 λ for two QDs mediated by a pair of superconducting fermions with pairing potential Δ = 5λ, (g) ε_d1 = ε_d2 = 0 and ε_c1 = ε_c2 = 0 for two QDs mediated by a pair of superconducting fermions with pairing potential Δ = 5λ.