High-fidelity entanglement between a trapped ion and a telecom photon via quantum frequency conversion

Autor: Matthias Bock, Pascal Eich, Stephan Kucera, Matthias Kreis, Andreas Lenhard, Christoph Becher, Jürgen Eschner

Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)

Entanglement between photons and stationary quantum nodes is a fundamental resource for quantum communication, but typical transition wavelengths are far from the telecom band. Here, the authors deal with the problem using polarisation-independent, e

Externí odkaz: https://doaj.org/article/b5a69a555c7d4df6b3dd3edb1455857a

Cavity enhanced telecom heralded single photons for spin-wave solid state quantum memories

Autor: Daniel Rieländer, Andreas Lenhard, Margherita Mazzera, Hugues de Riedmatten

Publikováno v: New Journal of Physics, Vol 18, Iss 12, p 123013 (2016)

We report on a source of heralded narrowband ( $\approx 3$ MHz) single photons compatible with solid-state spin-wave quantum memories based on praseodymium doped crystals. Widely non-degenerate narrow-band photon pairs are generated using cavity enha

Externí odkaz: https://doaj.org/article/7afbf762186b418a83beedd9eea25137

Laser-written integrated platform for quantum storage of heralded single photons

Autor: Roberto Osellame, Andreas Lenhard, H. de Riedmatten, Dario Lago-Rivera, Giacomo Corrielli, Alessandro Seri, Margherita Mazzera

Publikováno v: Optica
Optica 5 (2018): 934–941. doi:10.1364/OPTICA.5.000934
info:cnr-pdr/source/autori:Seri, A.; Corrielli, G.; Lago-Rivera, D.; Lenhard, A.; de Riedmatten, H.; Osellame, R.; Mazzera, M./titolo:Laser-written integrated platform for quantum storage of heralded single photons/doi:10.1364%2FOPTICA.5.000934/rivista:Optica/anno:2018/pagina_da:934/pagina_a:941/intervallo_pagine:934–941/volume:5

Efficient and long-lived interfaces between light and matter are crucial for the development of quantum information technologies. Integrated photonics solutions for quantum storage devices offer improved performances due to light confinement and enab

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb90b7b0de7a20d9106ecaa71b258226
http://arxiv.org/abs/1805.02494

Frequency-bin entanglement of narrowband photon pairs

Autor: Alessandro Seri, Antonio Acín, Daniel Cavalcanti, Margherita Mazzera, Alejandro Máttar, Hugues de Riedmatten, Osvaldo Jiminez, Daniel Rieländer, Andreas Lenhard

Publikováno v: Scopus-Elsevier

The ability to transfer entanglement over large distance is a main requirement for quantum networks. Another fundamental ingredient is the storage of such a quantum state in a quantum memory. To this end a useful resource is a photon pair for which o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19f2838df5012e9115cc59a3d1f84637
https://doi.org/10.1109/cleoe-eqec.2017.8087377

Coherence and Entanglement Preservation of Frequency-Converted Heralded Single Photons

Autor: Christoph Becher, Jürgen Eschner, José Brito, Andreas Lenhard, Matthias Bock

We report on quantum frequency conversion of near-infrared photons from a wave-length of 854 nm to the telecommunication O-band at 1310 nm with 8 % overall conversion efficiency. Entangled photon pairs at 854 nm are generated via type-II spontaneous

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c117e235171fabaec72a62bd5f85c66
http://arxiv.org/abs/1703.02879