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Coulomb-assisted nonlocal electron transport between two pairs of Majorana bound states in a superconducting island |
| Hao-Di Wang(王浩迪), Jun-Tong Ren(任俊潼), Hai-Feng Lü(吕海峰)†, and Sha-Sha Ke(柯莎莎)‡ |
| School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China |
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Abstract We investigate the nonlocal transport modulated by Coulomb interactions in devices comprising two interacting Majorana wires, where both nanowires are in proximity to a mesoscopic superconducting (SC) island. Each Majorana bound state (MBS) is coupled to one lead via a quantum dot with resonant levels. In this device, the nonlocal correlations can be induced in the absence of Majorana energy splitting. We find that the negative differential conductance and giant current noise cross correlation could be induced, due to the interplay between nonlocality of MBSs and dynamical Coulomb blockade effect. This feature may provide a signature for the existence of the MBSs.
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Received: 26 September 2023
Revised: 24 January 2024
Accepted manuscript online: 19 February 2024
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PACS:
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03.67.-a
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(Quantum information)
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03.65.Ta
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(Foundations of quantum mechanics; measurement theory)
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42.50.Dv
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(Quantum state engineering and measurements)
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| Fund: This work was supported by the National Natural Science Foundation of China (Grant Nos. 12074209 and 12274063), the Fundamental Research Funds for the Central Universities (Grant No. ZYGX2019J100), and the Open Project of State Key Laboratory of Low-Dimensional Quantum Physics (Grant No. KF202008). |
Corresponding Authors:
Hai-Feng Lü;,E-mail:lvhf04@uestc.edu.cn;Sha-Sha Ke,E-mail:keshasha@uestc.edu.cn
E-mail: lvhf04@uestc.edu.cn;keshasha@uestc.edu.cn
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Cite this article:
Hao-Di Wang(王浩迪), Jun-Tong Ren(任俊潼), Hai-Feng Lü(吕海峰), and Sha-Sha Ke(柯莎莎) Coulomb-assisted nonlocal electron transport between two pairs of Majorana bound states in a superconducting island 2024 Chin. Phys. B 33 050310
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