Quantum Dots in Gated Nanowires and Nanotubes
Contributors: Marcus, Charles M.; Halperin, Bertrand I.; Rashba, Emmanuel I.; Yacoby, Amir
Published: 2012
Language: eng
Description: This thesis describes experiments on quantum dots made by locally gating one-dimensional quantum wires. The first experiment studies a double quantum dot device formed in a Ge/Si core/shell nanowire. In addition to measuring transport through the double dot, we detect changes in the charge occupancy of the double dot by capacitively coupling it to a third quantum dot on a separate nanowire using a floating gate. We demonstrate tunable tunnel coupling of the double dot and quantify the strength of the tunneling using the charge sensor.
Notes: Keywords: carbon nanotubes, charge sensing, germanium silicon nanowires, quantum dots, quantum transport, spin qubits.

Thesis Ph.D. Harvard University 2012