Chekhovich, E.A. orcid.org/0000-0003-1626-9015, Makhonin, M.N., Kavokin, K.V. et al. (3 more authors) (2010) Pumping of Nuclear Spins by Optical Excitation of Spin-Forbidden Transitions in a Quantum Dot. Physical Review Letters, 104 (6). 066804. ISSN 0031-9007
Abstract
We demonstrate that efficient optical pumping of nuclear spins in semiconductor quantum dots (QDs) can be achieved by resonant pumping of optically forbidden transitions. This process corresponds to oneto-one conversion of a photon absorbed by the dot into a polarized nuclear spin, and also has potential for initialization of hole spin in QDs. We find that by employing this spin-forbidden process, nuclear polarization of 65% can be achieved, markedly higher than from pumping the allowed transition, which saturates due to the low probability of electron-nuclear spin flip-flop.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | ©2010 American Physical Society. Reproduced in accordance with the publisher's self-archiving policy. |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 09 Oct 2017 09:39 |
Last Modified: | 09 Oct 2017 09:39 |
Published Version: | https://doi.org/10.1103/PhysRevLett.104.066804 |
Status: | Published |
Publisher: | American Physical Society |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevLett.104.066804 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:122070 |