Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Wübbena, Jannes B."'
Autor:
Scharnhorst, Nils, Cerrillo, Javier, Kramer, Johannes, Leroux, Ian D., Wübbena, Jannes B., Retzker, Alex, Schmidt, Piet O.
We developed a multi-mode ground state cooling technique based on electromagnetically-induced transparency (EIT). By involving an additional ground and excited state, two individually adjustable bright states together with a dark state are created. W
Externí odkaz:
http://arxiv.org/abs/1711.00738
Autor:
Scharnhorst, Nils, Cerrillo, Javier, Kramer, Johannes, Leroux, Ian D., Wübbena, Jannes B., Retzker, Alex, Schmidt, Piet O.
Publikováno v:
Phys. Rev. A 98, 023424 (2018)
We introduce and demonstrate double-bright electromagnetically induced transparency (D-EIT) cooling as a novel approach to EIT cooling. By involving an additional ground state, two bright states can be shifted individually into resonance for cooling
Externí odkaz:
http://arxiv.org/abs/1711.00732
Autor:
Darugna, Francesco, Bolmgren, Karl H.A., Schmitz, Martin, Schön, Steffen, Wübbena, Jannes B., Wübbena, Gerhard, Bruno, Jon, Mitchell, Cathryn N.
Publikováno v:
In Advances in Space Research 15 September 2021 68(6):2401-2420
Autor:
Scharnhorst, Nils, Wübbena, Jannes B., Hannig, Stephan, Jakobsen, Kornelius, Kramer, Johannes, Leroux, Ian D., Schmidt, Piet O.
Publikováno v:
Optics Express 23, 19771-19776 (2015)
We demonstrate phase locking of a 729 nm diode laser to a 1542 nm master laser via an erbium-doped-fiber frequency comb, using a transfer-oscillator feedforward scheme which suppresses the effect of comb noise in an unprecedented 1.8 MHz bandwidth. W
Externí odkaz:
http://arxiv.org/abs/1505.02084
Autor:
Wan, Yong, Gebert, Florian, Wübbena, Jannes B., Scharnhorst, Nils, Amairi, Sana, Leroux, Ian D., Hemmerling, Börge, Lörch, Niels, Hammerer, Klemens, Schmidt, Piet O.
Publikováno v:
Nat Commun 5, 4096 (2014)
Precision spectroscopy of atomic and molecular ions offers a window to new physics, but is typically limited to species with a cycling transition for laser cooling and detection. Quantum logic spectroscopy has overcome this limitation for species wit
Externí odkaz:
http://arxiv.org/abs/1309.7033
Autor:
Amairi, Sana, Legero, Thomas, Kessler, Thomas, Sterr, Uwe, Wübbena, Jannes B., Mandel, Olaf, Schmidt, Piet O.
Thermal noise in optical cavities imposes a severe limitation in the stability of the most advanced frequency standards at a level of a few 10^(-16) (s/t)^(1/2) for long averaging times t. In this paper we describe two schemes for reducing the effect
Externí odkaz:
http://arxiv.org/abs/1212.3461
Sympathetic cooling of trapped ions has become an indispensable tool for quantum information processing and precision spectroscopy. In the simplest situation a single Doppler-cooled ion sympathetically cools another ion which typically has a differen
Externí odkaz:
http://arxiv.org/abs/1202.2730
Autor:
Darugna, Francesco, Wübbena, Jannes B., Wübbena, Gerhard, Schmitz, Martin, Schön, Steffen, Warneke, André, Institut für Erdmessung, Hannover, Germany, Geo++ GmbH, Garbsen, Germany
Publikováno v:
GPS Solutions
GPS Solutions 25 (2021)
GPS Solutions 25 (2021)
The access to Android-based Global Navigation Satellite Systems (GNSS) raw measurements has become a strong motivation to investigate the feasibility of smartphone-based positioning. Since the beginning of this research, the smartphone GNSS antenna h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11316759a182c18406678ae96a00c8b1
http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/10688
http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/10688
Autor:
Darugna, Francesco, Wübbena, Jannes B., Wübbena, Gerhard, Schmitz, Martin, Schön, Steffen, Warneke, André
Publikováno v:
GPS Solutions; Jan2021, Vol. 25 Issue 1, p1-12, 12p
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