Zobrazeno 1 - 10
of 185
pro vyhledávání: '"Leroux, P. D."'
Autor:
Sipkens, Timothy A., Corbin, Joel C., Koukoulas, Triantafillos, Oldershaw, Andrew, Lavoie, Thierry, Oliaee, Jalal Norooz, Liu, Fengshan, Leroux, Ian D., Smallwood, Gregory J., Lobo, Prem, Green, Richard G.
The particle filtration efficiency (PFE) of a respirator or face mask is one of its key properties. While the physics of particle filtration results in the PFE being size-dependent, measurement standards are specified using a single, integrated PFE,
Externí odkaz:
http://arxiv.org/abs/2201.12446
Akademický článek
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Autor:
Hannig, S., Pelzer, L., Scharnhorst, N., Kramer, J., Stepanova, M., Xu, Z. T., Spethmann, N., Leroux, I. D., Mehlstäubler, T. E., Schmidt, P. O.
With the advent of optical clocks featuring fractional frequency uncertainties on the order of $10^{-17}$ and below, new applications such as chronometric levelling with few-cm height resolution emerge. We are developing a transportable optical clock
Externí odkaz:
http://arxiv.org/abs/1901.02250
Publikováno v:
New J. Phys. 21, 083040 (2019)
We present a novel method for engineering an optical clock transition that is robust against external field fluctuations and is able to overcome limits resulting from field inhomogeneities. The technique is based on the application of continuous driv
Externí odkaz:
http://arxiv.org/abs/1811.06732
Autor:
Lauprêtre, Thomas, Linnet, Rasmus B., Leroux, Ian D., Landa, Haggai, Dantan, Aurélien, Drewsen, Michael
Publikováno v:
Phys. Rev. A 99, 031401 (2019)
Light-induced control of ions within small Coulomb crystals is investigated. By intense intracavity optical standing wave fields, subwavelength localization of individual ions is achieved for one-, two-, and three-dimensional crystals. Based on these
Externí odkaz:
http://arxiv.org/abs/1809.04455
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
We demonstrate light-induced localization of Coulomb-interacting particles in multi-dimensional structures. Subwavelength localization of ions within small multi-dimensional Coulomb crystals by an intracavity optical standing wave field is evidenced
Externí odkaz:
http://arxiv.org/abs/1703.05089
Autor:
Leroux, Ian D., Scharnhorst, Nils, Hannig, Stephan, Kramer, Johannes, Pelzer, Lennart, Stepanova, Mariia, Schmidt, Piet O.
Publikováno v:
Metrologia 54 (2017) 307-321
For atomic frequency standards in which fluctuations of the local oscillator (LO) frequency are the dominant noise source, we examine the role of the servo algorithm that predicts and corrects these frequency fluctuations. We derive the optimal linea
Externí odkaz:
http://arxiv.org/abs/1701.06697
Autor:
Leopold, Tobias, Schmöger, Lisa, Feuchtenbeiner, Stefanie, Grebing, Christian, Micke, Peter, Scharnhorst, Nils, Leroux, Ian D., López-Urrutia, José R. Crespo, Schmidt, Piet O.
We present a laser system with a linewidth and long-term frequency stability at the 50 kHz level. It is based on a Ti:Sapphire laser emitting radiation at 882 nm which is referenced to an atomic transition. For this, the length of an evacuated transf
Externí odkaz:
http://arxiv.org/abs/1602.04169