Correlated counting of single electrons in a nanowire double quantum dot

2008/12/10 by Theodore Choi, Ivan Shorubalko, Simon Gustavsson +2 · 17 citations
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Charge (physics) #Electron #Nanowire #Quantum #Quantum and electron transport phenomena #Quantum dot #Quantum point contact #Quantum wire #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall

paper · pdf · doi:10.1088/1367-2630/11/1/013005

published in New Journal of Physics 11(1), 013005 (IOP Publishing) · 11 pages, 4 figures; http://stacks.iop.org/1367-2630/11/013005

arxiv created 2008/12/10 · openalex publication_date 2009/01/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We report on correlated real-time detection of individual electrons in an InAs nanowire double quantum dot (DQD). Two self-aligned quantum point contacts (QPCs) in an underlying two-dimensional electron gas material serve as highly sensitive charge detectors for the DQD. Tunnel processes of individual electrons and all tunnel rates are determined by simultaneous measurements of the correlated signals of the QPCs.

Citations

• A Ge/Si heterostructure nanowire-based double quantum dot with integrated charge sensor
• Current measurement by real-time counting of single electrons
• PROTECTIVE EFFECT OF LEYK ON LEUCOPENIA DURING RADIOTHERAPY.
• Differential Charge Sensing and Charge Delocalization in a Tunable Double Quantum Dot
• Single-shot read-out of an individual electron spin in a quantum dot