Efficient electron transfer in quantum dot chains controlled by a cubic detuning profile via shortcuts to adiabaticity

Abstract

Long-distance fast and precise transfer of charge in semiconductor nanostructures is one of the goals for scalable electronic devices. We study theoretically the control of shuttling of an electron along a linear chain of semiconductor electrostatically-defined quantum dots by an electric field pulse with nonlinear time-dependent profile. We show that this essential nonlinearity along with shortcuts to adiabaticity techniques speed up the electron transfer with high fidelity, while still holding great robustness under spin-flip interactions and inhomogeneities in the couplings of the chain. A given fidelity can be set experimentally by controlling the maximum sweep energy and duration of the control pulse

11 pages, 5 figures

References in corpus (8)

• Prospects for Spin-Based Quantum Computing
• Scalable gate architecture for densely packed semiconductor spin qubits
• Scaling silicon-based quantum computing using CMOS technology: State-of-the-art, Challenges and Perspectives
• Spin dynamics in a strongly driven system: very slow Rabi oscillations
• Initialisation of single spin dressed states using shortcuts to adiabaticity
• Steady-State Coherent Transfer by Adiabatic Passage
• Interplay of charge noise and coupling to phonons in adiabatic electron transfer between quantum dots
• Performance of superadiabatic stimulated Raman adiabatic passage in the presence of dissipation and Ornstein-Uhlenbeck dephasing