Work

Excited-state spectroscopy on a nearly closed quantum dot via charge detection

Year: 2004

Type: article

Abstract: We demonstrate a method for measuring the discrete energy spectrum of a quantum dot connected very weakly to a single lead. A train of voltage pulses applied to a metal gate induces tunneling of electrons between the quantum dot and a reservoir. The effective tunnel rate depends on the number and nature of the energy levels in the dot made accessible by the pulse. Measurement of the charge dynamics thus reveals the energy spectrum of the dot, as demonstrated for a dot in the few-electron regime.

Source: Applied Physics Letters

DOI: 10.1063/1.1757023

Authors: J. M. Elzerman, R. Hanson, L. H. Willems van Beveren, L. M. K. Vandersypen, L. P. Kouwenhoven

Institution: Delft University of Technology

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: Defense Advanced Research Projects Agency, Office of Naval Research

OpenAlex ID: W2120605484