Time-bin entangled photons from a quantum dot

Harishankar Jayakumar, Ana Predojević (), Thomas Kauten, Tobias Huber, Glenn S. Solomon and Gregor Weihs
Additional contact information
Harishankar Jayakumar: Institut für Experimentalphysik, Universität Innsbruck
Ana Predojević: Institut für Experimentalphysik, Universität Innsbruck
Thomas Kauten: Institut für Experimentalphysik, Universität Innsbruck
Tobias Huber: Institut für Experimentalphysik, Universität Innsbruck
Glenn S. Solomon: Joint Quantum Institute, National Institute of Standards and Technology & University of Maryland
Gregor Weihs: Institut für Experimentalphysik, Universität Innsbruck

Nature Communications, 2014, vol. 5, issue 1, 1-5

Abstract: Abstract Long-distance quantum communication is one of the prime goals in the field of quantum information science. With information encoded in the quantum state of photons, existing telecommunication fibre networks can be effectively used as a transport medium. To achieve this goal, a source of robust entangled single-photon pairs is required. Here we report the realization of a source of time-bin entangled photon pairs utilizing the biexciton–exciton cascade in a III/V self-assembled quantum dot. We analyse the generated photon pairs by an inherently phase-stable interferometry technique, facilitating uninterrupted long integration times. We confirm the entanglement by performing quantum state tomography of the emitted photons, which yields a fidelity of 0.69(3) and a concurrence of 0.41(6) for our realization of time-energy entanglement from a single quantum emitter.

Date: 2014
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/ncomms5251 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5251

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms5251

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().