Photon-Assisted Electronic Transport Through an Asymmetrically Coupled Triple-Quantum Dot Interferometer
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We present theoretically the quantum electronic transport through an interferometer asymmetrically coupled with triple quantum dots. Using the Keldysh non-equilibrium Green’s function method, the photon-assisted transport properties through the asymmetric quantum system are numerically analyzed. The sidebands of the photon-assisted tunneling process appear when driven by the time-modulated field. The average current spectra are simulated as a function of quantum dot energy to understand the roles of side-coupling strength and time-modulated field in sideband effect and electron tunneling. This is helpful in future design of the basic structures required for quantum computation applications.
Keywords:photon-assisted nonequilibrium Green’s function quantum dot electron transport
Project supported by the National Natural Science Foundation of China (Grant no. 11447132), Natural Science Foundation of Heilongjiang (A201405), 111 Project (B13015) to Harbin Engineering University, the key lab program of MOE, the Fundamental Research Funds for the Central Universities, and Chongqing Education Commission Science and Technology Project no. KJQN201801402.