Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Eschner, Juergen"'
We investigate properties of the lasing action observed on the 1S0--3P1 intercombination transition of ytterbium atoms that are laser-cooled and -trapped inside a high-finesse cavity. The dressing of the atomic states on the 1S0--1P1 transition by th
Externí odkaz:
http://arxiv.org/abs/2404.16765
We experimentally and theoretically study the formation of dressed states emerging from strong collective coupling of the narrow intercombination line of Yb atoms to a single mode of a high-finesse optical cavity. By permanently trapping and cooling
Externí odkaz:
http://arxiv.org/abs/2404.12173
Autor:
Kucera, Stephan, Haen, Christian, Arenskötter, Elena, Bauer, Tobias, Meiers, Jonas, Schäfer, Marlon, Boland, Ross, Yahyapour, Milad, Lessing, Maurice, Holzwarth, Ronald, Becher, Christoph, Eschner, Jürgen
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 the link f
Externí odkaz:
http://arxiv.org/abs/2404.04958
Publikováno v:
Max Bergerhoff, Omar Elshehy, Stephan Kucera, Matthias Kreis, and J\"urgen Eschner Phys. Rev. A 110, 032603 (2024)
The quantum repeater cell is a basic building block for a quantum network, as it allows to overcome the distance limitations due to unavoidable fiber loss in direct transmission. We demonstrate the implementation of a quantum repeater cell, based on
Externí odkaz:
http://arxiv.org/abs/2312.14805
Autor:
Bock, Matthias, Sekatski, Pavel, Bancal, Jean-Daniel, Kucera, Stephan, Bauer, Tobias, Sangouard, Nicolas, Becher, Christoph, Eschner, Jürgen
Publikováno v:
npj Quantum Information 10, 63 (2024)
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 method relie
Externí odkaz:
http://arxiv.org/abs/2304.09517
Full Bell-basis measurement of an atom-photon 2-qubit state and its application for quantum networks
Autor:
Arenskötter, Elena, Kucera, Stephan, Elshehy, Omar, Bergerhoff, Max, Kreis, Matthias, Brunel, Léandre, Eschner, Jürgen
The efficiency of a Bell-state measurement on photon pairs is bound to 50\,\% due to the number of Bell states that can be distinguished using linear optics. Here we present the implementation of a protocol that allows us to distinguish all four Bell
Externí odkaz:
http://arxiv.org/abs/2301.06091
Autor:
Arenskötter, Elena, Bauer, Tobias, Kucera, Stephan, Bock, Matthias, Eschner, Jürgen, Becher, Christoph
Publikováno v:
npj Quantum Inf 9, 34 (2023)
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 $^{40}$Ca$^+$ single-ion
Externí odkaz:
http://arxiv.org/abs/2211.08841
Autor:
van Loock, Peter, Alt, Wolfgang, Becher, Christoph, Benson, Oliver, Boche, Holger, Deppe, Christian, Eschner, Jürgen, Höfling, Sven, Meschede, Dieter, Michler, Peter, Schmidt, Frank, Weinfurter, Harald
We analyze elementary building blocks for quantum repeaters based on fiber channels and memory stations. Implementations are considered for three different physical platforms, for which suitable components are available: quantum dots, trapped atoms a
Externí odkaz:
http://arxiv.org/abs/1912.10123
Akademický článek
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Publikováno v:
Phys. Rev. A 99, 013849 (2019)
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:
http://arxiv.org/abs/1808.03132