Accession Number : AD1004592

Title :   Local Gate Control of a Carbon Nanotube Double Quantum Dot

Descriptive Note : Journal Article

Corporate Author : Harvard University Cambridge United States

Personal Author(s) : Mason,N ; Biercuk,M J ; Marcus,C M

Full Text :

Report Date : 04 Apr 2016

Pagination or Media Count : 4

Abstract : We have measured carbon nanotube quantum dots with multiple electrostatic gates and used the resulting enhanced control to investigate a nanotube double quantum dot. Transport measurements reveal honeycomb charge stability diagrams as a function of two nearly independent gate voltages. The device can be tuned from weak to strong interdot tunnel coupling regimes, and the transparency of the leads can be controlled independently. We extract values of energy-level spacings, capacitances, and interaction energies for this system. This ability to control electroninteractions in the quantum regime in a molecular conductor is important for applications such as quantum computation.

Descriptors :   quantum dots , carbon nanotubes , capacitance , quantum tunneling , electrons , electrostatics

Distribution Statement : APPROVED FOR PUBLIC RELEASE