Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Jürgen Eschner"'
Autor:
Stephan Kucera, Christian Haen, Elena Arenskötter, Tobias Bauer, Jonas Meiers, Marlon Schäfer, Ross Boland, Milad Yahyapour, Maurice Lessing, Ronald Holzwarth, Christoph Becher, Jürgen Eschner
Publikováno v:
npj Quantum Information, Vol 10, Iss 1, Pp 1-11 (2024)
Abstract We report on the implementation of quantum entanglement distribution and quantum state teleportation over a 14.4 km urban dark-fiber link, which is partially underground, partially overhead, and patched in several stations. We characterize t
Externí odkaz:
https://doaj.org/article/fe546af6f7b44207af09b7cdff3da57a
Autor:
Matthias Bock, Pavel Sekatski, Jean-Daniel Bancal, Stephan Kucera, Tobias Bauer, Nicolas Sangouard, Christoph Becher, Jürgen Eschner
Publikováno v:
npj Quantum Information, Vol 10, Iss 1, Pp 1-9 (2024)
Abstract We report on a method to certify a unitary operation with the help of source and measurement apparatuses whose calibration throughout the certification process needs not be trusted. As in the device-independent paradigm our certification met
Externí odkaz:
https://doaj.org/article/40333fa4c3ab410b8b364bcf4a974855
Autor:
Elena Arenskötter, Tobias Bauer, Stephan Kucera, Matthias Bock, Jürgen Eschner, Christoph Becher
Publikováno v:
npj Quantum Information, Vol 9, Iss 1, Pp 1-8 (2023)
Abstract Entanglement-based quantum networks require quantum photonic interfaces between stationary quantum memories and photons, enabling entanglement distribution. Here we present such a photonic interface, designed for connecting a 40Ca+ single-io
Externí odkaz:
https://doaj.org/article/9e65342519df4260991a27ef9d42bf8f
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
Publikováno v:
New Journal of Physics, Vol 15, Iss 8, p 085004 (2013)
An obvious way to entangle two atoms located at remote locations is to produce a pair of entangled photons half-way between the two atoms, to send one photon to each location and to subsequently map the photonic entanglement into the atoms. The effic
Externí odkaz:
https://doaj.org/article/ea22cb4851454d5a9cd8c2ac04ae5ce1
Publikováno v:
2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
We demonstrate a three-qubit protocol involving a single ion and two photons, whose functionality can be programmed to serve as a quantum repeater [1] node for sending entangled photons or for receiving photons for entanglement swapping [2] . Moreove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0772aa21bc4d08fecbb4e8aaffa3d12c
https://doi.org/10.1109/cleo/europe-eqec52157.2021.9541908
https://doi.org/10.1109/cleo/europe-eqec52157.2021.9541908
Autor:
Pascal Eich, Matthias Bock, Matthias Kreis, Jürgen Eschner, Christoph Becher, Andreas Lenhard, Stephan Kucera
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Nature Communications
Nature Communications
Entanglement between a stationary quantum system and a flying qubit is an essential ingredient of a quantum-repeater network. It has been demonstrated for trapped ions, trapped atoms, color centers in diamond, or quantum dots. These systems have tran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76a10ccaebcbdad0db57da0416b27ef5
https://doaj.org/article/b5a69a555c7d4df6b3dd3edb1455857a
https://doaj.org/article/b5a69a555c7d4df6b3dd3edb1455857a
Quantum networks require flying qubits that transfer information between the nodes. This may be implemented by means of single atoms (the nodes) that emit and absorb single photons (the flying qubits) and requires full control of photon absorption an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21b202feeb69e7953079ff92f7c9f58f
Publikováno v:
Physical Review A. 99
We observed optical bistability as well as oscillations in the upper bistable branch when cold ytterbium atoms are dispersively coupled to a high finesse optical cavity. Comparable previous observations were explained by atomic density oscillations i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d9dbbe8346693b6079da2626645af6b
https://doi.org/10.1103/physreva.99.013849
https://doi.org/10.1103/physreva.99.013849
Publikováno v:
Quantum Information and Measurement (QIM) V: Quantum Technologies.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1eeb01b60ced33d2f18190f19ef15d1e
https://doi.org/10.1364/qim.2019.f5a.62
https://doi.org/10.1364/qim.2019.f5a.62