Real-Time Detection and Control of Correlated Charge Tunneling in a Quantum Dot.

• Tác giả: Johannes C Bayer, Fredrik Brange, Christian Flindt, Rolf J Haug, Eddy P Rugeramigabo, Adrian Schmidt, Timo Wagner
• Ngôn ngữ: eng
• Ký hiệu phân loại: 004.338 Systems analysis and design, computer architecture, performance evaluation of real-time computers
• Thông tin xuất bản: United States : Physical review letters , 2025
• Bộ sưu tập: NCBI
• ID: 90309

Tóm tắt

We experimentally demonstrate the real-time detection and control of correlated charge tunneling in a dynamically driven quantum dot. Specifically, we measure the joint distribution of waiting times between tunneling charges and show that the waiting times for holes may be strongly correlated due to the periodic drive and the Coulomb interactions on the dot, although the electron waiting times are not. Our measurements are in excellent agreement with a theoretical model that allows us to develop a detailed understanding of the correlated tunneling events. We also demonstrate that the degree of correlations can be controlled by the drive. Our experiment paves the way for systematic real-time investigations of correlated electron transport in low-dimensional nanostructures.