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Time-bin entangled photons from a quantum dot
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 entan...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4108004/ https://www.ncbi.nlm.nih.gov/pubmed/24968024 http://dx.doi.org/10.1038/ncomms5251 |
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author | Jayakumar, Harishankar Predojević, Ana Kauten, Thomas Huber, Tobias Solomon, Glenn S. Weihs, Gregor |
author_facet | Jayakumar, Harishankar Predojević, Ana Kauten, Thomas Huber, Tobias Solomon, Glenn S. Weihs, Gregor |
author_sort | Jayakumar, Harishankar |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-4108004 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
record_format | MEDLINE/PubMed |
spelling | pubmed-41080042014-12-26 Time-bin entangled photons from a quantum dot Jayakumar, Harishankar Predojević, Ana Kauten, Thomas Huber, Tobias Solomon, Glenn S. Weihs, Gregor Nat Commun Article 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. 2014-06-26 /pmc/articles/PMC4108004/ /pubmed/24968024 http://dx.doi.org/10.1038/ncomms5251 Text en Users may view, print, copy, and download text and data-mine the content in such documents, for the purposes of academic research, subject always to the full Conditions of use:http://www.nature.com/authors/editorial_policies/license.html#terms |
spellingShingle | Article Jayakumar, Harishankar Predojević, Ana Kauten, Thomas Huber, Tobias Solomon, Glenn S. Weihs, Gregor Time-bin entangled photons from a quantum dot |
title | Time-bin entangled photons from a quantum dot |
title_full | Time-bin entangled photons from a quantum dot |
title_fullStr | Time-bin entangled photons from a quantum dot |
title_full_unstemmed | Time-bin entangled photons from a quantum dot |
title_short | Time-bin entangled photons from a quantum dot |
title_sort | time-bin entangled photons from a quantum dot |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4108004/ https://www.ncbi.nlm.nih.gov/pubmed/24968024 http://dx.doi.org/10.1038/ncomms5251 |
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