Atomic-like charge qubit in a carbon nanotube enabling electric and magnetic field nano-sensing.

ABSTRACT: Quantum sensing techniques have been successful in pushing the sensitivity limits in numerous fields, and hold promise for scanning probes that study nano-scale devices and materials. However, forming a nano-scale qubit that is simple and robust enough to be placed on a scanning tip, and sensitive enough to detect various physical observables, is still a great challenge. Here, we demonstrate, in a carbon nanotube, an implementation of a charge qubit that achieves these requirements. Our qubit's basis states are formed from the natural electronic wavefunctions in a single quantum dot. Different magnetic moments and charge distributions of these wavefunctions make it sensitive to magnetic and electric fields, while difference in their electrical transport allows a simple transport-based read

SUBMITTER: Khivrich I 

PROVIDER: S-EPMC7210973 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature