Cargando…
Strain-Controlled Quantum Dot Fine Structure for Entangled Photon Generation at 1550 nm
[Image: see text] Entangled photon generation at 1550 nm in the telecom C-band is of critical importance as it enables the realization of quantum communication protocols over long distance using deployed telecommunication infrastructure. InAs epitaxial quantum dots have recently enabled on-demand ge...
Autores principales: | , , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
|
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8704189/ https://www.ncbi.nlm.nih.gov/pubmed/34894699 http://dx.doi.org/10.1021/acs.nanolett.1c04024 |
_version_ | 1784621647132622848 |
---|---|
author | Lettner, Thomas Gyger, Samuel Zeuner, Katharina D. Schweickert, Lucas Steinhauer, Stephan Reuterskiöld Hedlund, Carl Stroj, Sandra Rastelli, Armando Hammar, Mattias Trotta, Rinaldo Jöns, Klaus D. Zwiller, Val |
author_facet | Lettner, Thomas Gyger, Samuel Zeuner, Katharina D. Schweickert, Lucas Steinhauer, Stephan Reuterskiöld Hedlund, Carl Stroj, Sandra Rastelli, Armando Hammar, Mattias Trotta, Rinaldo Jöns, Klaus D. Zwiller, Val |
author_sort | Lettner, Thomas |
collection | PubMed |
description | [Image: see text] Entangled photon generation at 1550 nm in the telecom C-band is of critical importance as it enables the realization of quantum communication protocols over long distance using deployed telecommunication infrastructure. InAs epitaxial quantum dots have recently enabled on-demand generation of entangled photons in this wavelength range. However, time-dependent state evolution, caused by the fine-structure splitting, currently limits the fidelity to a specific entangled state. Here, we show fine-structure suppression for InAs quantum dots using micromachined piezoelectric actuators and demonstrate generation of highly entangled photons at 1550 nm. At the lowest fine-structure setting, we obtain a maximum fidelity of 90.0 ± 2.7% (concurrence of 87.5 ± 3.1%). The concurrence remains high also for moderate (weak) temporal filtering, with values close to 80% (50%), corresponding to 30% (80%) of collected photons, respectively. The presented fine-structure control opens the way for exploiting entangled photons from quantum dots in fiber-based quantum communication protocols. |
format | Online Article Text |
id | pubmed-8704189 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-87041892021-12-27 Strain-Controlled Quantum Dot Fine Structure for Entangled Photon Generation at 1550 nm Lettner, Thomas Gyger, Samuel Zeuner, Katharina D. Schweickert, Lucas Steinhauer, Stephan Reuterskiöld Hedlund, Carl Stroj, Sandra Rastelli, Armando Hammar, Mattias Trotta, Rinaldo Jöns, Klaus D. Zwiller, Val Nano Lett [Image: see text] Entangled photon generation at 1550 nm in the telecom C-band is of critical importance as it enables the realization of quantum communication protocols over long distance using deployed telecommunication infrastructure. InAs epitaxial quantum dots have recently enabled on-demand generation of entangled photons in this wavelength range. However, time-dependent state evolution, caused by the fine-structure splitting, currently limits the fidelity to a specific entangled state. Here, we show fine-structure suppression for InAs quantum dots using micromachined piezoelectric actuators and demonstrate generation of highly entangled photons at 1550 nm. At the lowest fine-structure setting, we obtain a maximum fidelity of 90.0 ± 2.7% (concurrence of 87.5 ± 3.1%). The concurrence remains high also for moderate (weak) temporal filtering, with values close to 80% (50%), corresponding to 30% (80%) of collected photons, respectively. The presented fine-structure control opens the way for exploiting entangled photons from quantum dots in fiber-based quantum communication protocols. American Chemical Society 2021-12-13 2021-12-22 /pmc/articles/PMC8704189/ /pubmed/34894699 http://dx.doi.org/10.1021/acs.nanolett.1c04024 Text en © 2021 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Lettner, Thomas Gyger, Samuel Zeuner, Katharina D. Schweickert, Lucas Steinhauer, Stephan Reuterskiöld Hedlund, Carl Stroj, Sandra Rastelli, Armando Hammar, Mattias Trotta, Rinaldo Jöns, Klaus D. Zwiller, Val Strain-Controlled Quantum Dot Fine Structure for Entangled Photon Generation at 1550 nm |
title | Strain-Controlled Quantum Dot Fine Structure for Entangled
Photon Generation at 1550 nm |
title_full | Strain-Controlled Quantum Dot Fine Structure for Entangled
Photon Generation at 1550 nm |
title_fullStr | Strain-Controlled Quantum Dot Fine Structure for Entangled
Photon Generation at 1550 nm |
title_full_unstemmed | Strain-Controlled Quantum Dot Fine Structure for Entangled
Photon Generation at 1550 nm |
title_short | Strain-Controlled Quantum Dot Fine Structure for Entangled
Photon Generation at 1550 nm |
title_sort | strain-controlled quantum dot fine structure for entangled
photon generation at 1550 nm |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8704189/ https://www.ncbi.nlm.nih.gov/pubmed/34894699 http://dx.doi.org/10.1021/acs.nanolett.1c04024 |
work_keys_str_mv | AT lettnerthomas straincontrolledquantumdotfinestructureforentangledphotongenerationat1550nm AT gygersamuel straincontrolledquantumdotfinestructureforentangledphotongenerationat1550nm AT zeunerkatharinad straincontrolledquantumdotfinestructureforentangledphotongenerationat1550nm AT schweickertlucas straincontrolledquantumdotfinestructureforentangledphotongenerationat1550nm AT steinhauerstephan straincontrolledquantumdotfinestructureforentangledphotongenerationat1550nm AT reuterskioldhedlundcarl straincontrolledquantumdotfinestructureforentangledphotongenerationat1550nm AT strojsandra straincontrolledquantumdotfinestructureforentangledphotongenerationat1550nm AT rastelliarmando straincontrolledquantumdotfinestructureforentangledphotongenerationat1550nm AT hammarmattias straincontrolledquantumdotfinestructureforentangledphotongenerationat1550nm AT trottarinaldo straincontrolledquantumdotfinestructureforentangledphotongenerationat1550nm AT jonsklausd straincontrolledquantumdotfinestructureforentangledphotongenerationat1550nm AT zwillerval straincontrolledquantumdotfinestructureforentangledphotongenerationat1550nm |