Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

Quantum frequency down-conversion of single photons from a quantum dot to the telecom band

Lenhard, Zaske, Kesler, Kettler, Arend, Hepp, Albrecht, R. C. Schulz, Jetter, Michler, Becher

Published Jan 1, 2012• 0 citations
OpenAlex

Related papers

Frequency down-conversion of single photons into the telecom band

Olivares-Rentería, Ottaviani, Morigi +4 more

Conference on Lasers and Electro-Optics•Jan 1, 2010•0 citations

Quantum frequency conversion of visible single photons from a quantum dot to a telecom band

Andreas Lenhard, Sebastian Zaske, Christian Kessler +8 more

Establishing a network of quantum systems will be based on single photons as flying qubits. For a long range transmission, wavelengths in the low-loss telecom bands will be necessary. As such a network may consist of dissimilar systems emitting at different wavelengths, an interface will be required converting the photons to the telecom band without disturbing the single photon quantum properties. We here demonstrate frequency down-conversion of single photons from a quantum dot and prove the preservation of the single photon character [1].

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•May 1, 2013•0 citations

Quantum transduction of telecommunications-band single photons from a quantum dot by frequency upconversion

Matthew T. Rakher, Lijun Ma, Oliver Slattery +2 more

arXiv:1004.2686•Nature Photonics•Oct 3, 2010•242 citations

Quantum Frequency Down-Conversion of Single Photons from a Quantum Dot to the Telecom Band

Andreas Lenhard, Sebastian Zaske, Christian Kessler +8 more

We report the frequency downconversion of single photons from a quantum dot (710nm) to the telecommunications O-band with over-all conversion efficiency of 33%. We show the conservation of nonclassical statistics and coherence properties during conversion.

Conference on Lasers and Electro-Optics•Jan 1, 2012•0 citations

Quantum Transduction of Telecommunications-band Single Photons from a Quantum Dot by Frequency Upconversion

Matthew T. Rakher, Lijun Ma, Oliver Slattery +2 more

Frontiers in Optics•Jan 1, 2010•30 citations

Quantum key distribution with a bright telecom wavelength quantum dot single-photon source

Christopher L. Morrison, Francesco Graffitti, Zhe Xian Koong +4 more

A source of bright and pure single photons is an essential tool for photonic quantum technologies, predicted to enable secure communication and networking. Self-assembled quantum dots are among the leading candidates to realise such a source. The currently highest-performing quantum dots emit at wavelengths unsuitable for fibre transmission, with telecom quantum dots lagging in performance. An intermediate step is to use quantum frequency conversion. Here we report to our knowledge the brightest quantum dot based source of telecom photons by frequency converting a near-infrared quantum dot embedded in a micropillar cavity to the telecom C-band. In a single-photon BB84 protocol, this source is capable of producing asymptotic keys rates of 1 kbps at over 150 km of optical fibre.

Quantum Technology: Driving Commercialisation of an Enabling Science•Oct 6, 2021•0 citations
Establishing a network of quantum systems will be based on single photons as flying qubits. For a long range transmission, wavelengths in the low-loss telecom bands will be necessary. As such a network may consist of dissimilar systems emitting at different wavelengths, an interface will be required converting the photons to the telecom band without disturbing the single photon quantum properties. We here demonstrate frequency down-conversion of single photons from a quantum dot and prove the preservation of the single photon character [1].
A source of bright and pure single photons is an essential tool for photonic quantum technologies, predicted to enable secure communication and networking. Self-assembled quantum dots are among the leading candidates to realise such a source. The currently highest-performing quantum dots emit at wavelengths unsuitable for fibre transmission, with telecom quantum dots lagging in performance. An intermediate step is to use quantum frequency conversion. Here we report to our knowledge the brightest quantum dot based source of telecom photons by frequency converting a near-infrared quantum dot embedded in a micropillar cavity to the telecom C-band. In a single-photon BB84 protocol, this source is capable of producing asymptotic keys rates of 1 kbps at over 150 km of optical fibre.