Work

Persistent current induced by vacuum fluctuations in a quantum ring

Year: 2013

Type: article

Abstract: We study theoretically interaction between electrons in a quantum ring embedded in a microcavity and vacuum fluctuations of electromagnetic field in the cavity. It is shown that the vacuum fluctuations can split electron states of the ring with opposite angular momenta. As a consequence, the ground state of the electron system in the quantum ring can be associated with nonzero electric current. Since a ground-state current flows without dissipation, such a quantum ring gets a magnetic moment and can be treated as an artificial spin.

Source: Physical Review B

DOI: 10.1103/physrevb.87.245437

Authors: O. V. Kibis, O. Kyriienko, I. A. Shelykh

Institutions: Novosibirsk State Technical University, University of Iceland, Nanyang Technological University

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: Nanyang Technological University, Russian Foundation for Basic Research

Award: G6244459401