Time-Resolved Detection of Individual Electrons in a Quantum Dot

Abstract

We present measurements on a quantum dot and a nearby, capacitively coupled, quantum point contact used as a charge detector. With the dot being weakly coupled to only a single reservoir, the transfer of individual electrons onto and off the dot can be observed in real time in the current signal from the quantum point contact. From these time-dependent traces, the quantum mechanical coupling between dot and reservoir can be extracted quantitatively. A similar analysis allows the determination of the occupation probability of the dot states.

3 pages, 3 figures

References in corpus (7)

• Quantum Computation with Quantum Dots
• Few-Electron Quantum Dot Circuit with Integrated Charge Read-Out
• Zeeman energy and spin relaxation in a one-electron quantum dot
• Quantum-Limited Measurement and Information in Mesoscopic Detectors
• Efficiency of Mesoscopic Detectors
• Excited-state spectroscopy on a nearly-closed quantum dot via charge detection
• In-plane gate single-electron transistor in Ga[Al]As fabricated by scanning probe lithography

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