A few-electron quadruple quantum dot in a closed loop

Abstract

We report the realization of a quadruple quantum dot device in a square-like configuration where a single electron can be transferred on a closed path free of other electrons. By studying the stability diagrams of this system, we demonstrate that we are able to reach the few-electron regime and to control the electronic population of each quantum dot with gate voltages. This allows us to control the transfer of a single electron on a closed path inside the quadruple dot system. This work opens the route towards electron spin manipulation using spin-orbit interaction by moving an electron on complex paths free of electrons

References in corpus (5)

• Coherent control of a single electron spin with electric fields
• Enhancing the Coherence of a Spin Qubit by Operating it as a Feedback Loop That Controls its Nuclear Spin Bath
• Coherent spin manipulation in an exchange-only qubit
• Two path transport measurements on a triple quantum dot
• Geometric phases in semiconductor spin qubits: Manipulations and decoherence

Cited by in corpus (9)

• Loading a quantum-dot based "Qubyte" register
• Full control of quadruple quantum dot circuit charge states in the single electron regime
• A triangular triple quantum dot with tunable tunnel couplings
• Effects of anisotropy and Coulomb interactions on quantum transport in a quadruple quantum-dot structure
• A linear triple quantum dot system in isolated configuration
• An automated approach for consecutive tuning of quantum dot arrays
• Mapping the Chemical Potential Landscape of a Triple Quantum Dot
• Ground state spin and excitation energies in half-filled Lieb lattices
• Qubit transformations on Rashba ring with periodic potential