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دسته بندی:
محاسبات کوانتومی - Quantum-Computing
سال انتشار:
2022
عنوان انگلیسی مقاله:
Tunneling Current Through a Double Quantum Dots System
ترجمه فارسی عنوان مقاله:
جریان تونل زنی از طریق سیستم دو نقطه کوانتومی
منبع:
ieee - ieee Access;2022;10; ;10:1109/ACCESS:2022:3190617
نویسنده:
AMIN RASSEKH 1, MAJID SHALCHIAN 1, (Member, IEEE), JEAN-MICHEL SALLESE 2, (Member, IEEE), AND FARZAN JAZAERI
چکیده انگلیسی:
Electrostatically confined quantum dots in semiconductors hold the promise to achieve high
scalability and reliability levels for practical implementation of solid-state qubits where the electrochemical
potentials of each quantum dot can be independently controlled by the gate voltages.In this paper, the
current and charge stability diagram of two-well potentials arising from electrostatically defined double
quantum dot (DQD) are analytically realized. We propose to apply the Generalized Hubbard model to find
the Hamiltonian of the system. The proposed analysis takes the tunnel coupling between the dots, Coulomb
interaction, and Zeeman energy arising from an external magnetic field into account. Using quantum master
equations to predict the probability of the final states in a DQD system, we study the tunneling current
through two quantum dots coupled in series with two conducting leads, and therefore, the charge stability
diagram is theoretically investigated. The impact of the tunnel coupling and Zeeman energy on the charge
stability diagram is deeply discussed. The validity of the presented analysis is confirmed by experimental
data as well as the classical capacitance model.
INDEX TERMS: Double quantum dot | hubbard model | zeeman energy | charge stability diagram | master equation.
قیمت: رایگان
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