Change search
ReferencesLink to record
Permanent link

Direct link
Photon Cascade from a Single Crystal Phase Nanowire Quantum Dot
Show others and affiliations
2016 (English)In: Nano letters (Print), ISSN 1530-6984, E-ISSN 1530-6992, Vol. 16, no 2, 1081-1085 p.Article in journal (Refereed) PublishedText
Abstract [en]

We report the first comprehensive experimental and theoretical study of the optical properties of single crystal phase quantum dots in InP nanowires. Crystal phase quantum dots are defined by a transition in the crystallographic lattice between zinc blende and wurtzite segments and therefore offer unprecedented potential to be controlled with atomic layer accuracy without random alloying. We show for the first time that crystal phase quantum dots are a source of pure single-photons and cascaded photon-pairs from type II transitions with excellent optical properties in terms of intensity and line width. We notice that the emission spectra consist often of two peaks close in energy, which we explain with a comprehensive theory showing that the symmetry of the system plays a crucial role for the hole levels forming hybridized orbitals. Our results state that crystal phase quantum dots have promising quantum optical properties for single photon application and quantum optics.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2016. Vol. 16, no 2, 1081-1085 p.
Keyword [en]
Crystal phase quantum dot, nanowire, InP, two-photon cascaded emission, type II transition
National Category
Physical Chemistry Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-183654DOI: 10.1021/acs.nanolett.5b04217ISI: 000370215200039ScopusID: 2-s2.0-84958168285OAI: oai:DiVA.org:kth-183654DiVA: diva2:913138
Note

QC 20160319

Available from: 2016-03-19 Created: 2016-03-18 Last updated: 2016-04-19Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Zwiller, Val
By organisation
Applied Physics
In the same journal
Nano letters (Print)
Physical ChemistryPhysical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 36 hits
ReferencesLink to record
Permanent link

Direct link