Detection and control of charge states in a quintuple quantum dot

Abstract

A semiconductor quintuple quantum dot with two charge sensors and an additional contact to the center dot from an electron reservoir is fabricated to demonstrate the concept of scalable architecture. This design enables formation of the five dots as confirmed by measurements of the charge states of the three nearest dots to the respective charge sensor. The gate performance of the measured stability diagram is well reproduced by a capacitance model.These results provide an important step towards realizing controllable large scale multiple quantum dot systems.

10 pages, 4 figures

References in corpus (20)

• Quantum Computation with Quantum Dots
• Spins in few-electron quantum dots
• Electron transport through double quantum dots
• Driven coherent oscillations of a single electron spin in a quantum dot
• Demonstration of Entanglement of Electrostatically Coupled Singlet-Triplet Qubits
• Prospects for Spin-Based Quantum Computing
• Fast Single-Charge Sensing with an rf Quantum Point Contact
• Coherent spin manipulation in an exchange-only qubit
• The Resonant Exchange Qubit
• Fast sensing of double-dot charge arrangement and spin state with an rf sensor quantum dot
• Long-range coherent coupling in a quantum dot array
• Frequency Multiplexing for Readout of Spin Qubits
• Fast Electrical Control of Single Electron Spins in Quantum Dots with Vanishing Influence from Nuclear Spins
• Quantum simulation of Fermi-Hubbard models in semiconductor quantum dot arrays
• Single Shot Charge Detection Using A Radio-Frequency Quantum Point Contact
• Single to quadruple quantum dots with tunable tunnel couplings
• Computer-automated tuning of semiconductor double quantum dots into the single-electron regime
• Tunable Spin Qubit Coupling Mediated by a Multi-Electron Quantum Dot
• Full control of quadruple quantum dot circuit charge states in the single electron regime
• Single-electron Spin Resonance in a Quadruple Quantum Dot

Cited by in corpus (28)

• Review of performance metrics of spin qubits in gated semiconducting nanostructures
• Loading a quantum-dot based "Qubyte" register
• Randomized benchmarking of barrier versus tilt control of a singlet-triplet qubit
• Negative spin exchange in a multielectron quantum dot
• Quantum walks of interacting fermions on a cycle graph
• Crosstalk error correction through dynamical decoupling of single-qubit gates in capacitively coupled singlet-triplet semiconductor spin qubits
• A triangular triple quantum dot with tunable tunnel couplings
• Spin entangled state transfer in quantum dot arrays: Coherent adiabatic and speed-up protocols
• Stabilization and manipulation of multispin states in quantum-dot time crystals with Heisenberg interactions
• Fast long-range state transfer in quantum dot arrays via shortcuts to adiabaticity
• Device Architecture for Coupling Spin Qubits Via an Intermediate Quantum State
• Fast pulse sequences for dynamically corrected gates in single-triplet qubits
• Coherent long-range transfer of two-electron states in ac-driven triple quantum dots
• The influence of Coulomb correlations on nonequilibrium quantum transport in quadruple quantum-dot structure
• Error correction for gate operations in systems of exchange-coupled singlet-triplet qubits in double quantum dots
• Towards a realistic GaAs-spin qubit device for a classical error-corrected quantum memory
• Coherent Long-Range Thermoelectrics in Nonadiabatic Driven Quantum Systems
• Co-tunneling spin blockade observed in a three-terminal triple quantum dot
• The walker speaks its graph: global and nearly-local probing of the tunnelling amplitude in continuous-time quantum walks
• Visual explanations of machine learning model estimating charge states in quantum dots
• Simulation of Coupling Strength of Capacitively Coupled Singlet-Triplet Qubits
• Dynamics of quantum cellular automata electron transition in triple quantum dots
• Formation of multiple quantum dots in ZnO heterostructures
• Hitting time for quantum walks of identical particles
• Noise suppression and long-range exchange coupling for gallium arsenide spin qubits
• A single eletron-photon pair generation from a single polarization-entangled photon pair
• Automatic detection of single-electron regime of quantum dots and definition of virtual gates using U-Net and clustering
• Microwave dependent quantum transport characteristics in GaN/AlGaN FETs