Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Dörscher, Sören"'
Autor:
Clock, International, Networking, Oscillator, Collaboration, Amy-Klein, Anne, Benkler, Erik, Blondé, Pascal, Bongs, Kai, Cantin, Etienne, Chardonnet, Christian, Denker, Heiner, Dörscher, Sören, Feng, Chen-Hao, Gaudron, Jacques-Olivier, Gill, Patrick, Hill, Ian R, Huang, Wei, Johnson, Matthew Y H, Kale, Yogeshwar B, Katori, Hidetoshi, Klose, Joshua, Kronjäger, Jochen, Kuhl, Alexander, Targat, Rodolphe Le, Lisdat, Christian, Lopez, Olivier, Lücke, Tim, Mazouth, Maxime, Mukherjee, Shambo, Nosske, Ingo, Pointard, Benjamin, Pottie, Paul-Eric, Schioppo, Marco, Singh, Yeshpal, Stahl, Kilian, Takamoto, Masao, Tønnes, Mads, Tunesi, Jacob, Ushijima, Ichiro, Vishwakarma, Chetan
Optical clocks have improved their frequency stability and estimated accuracy by more than two orders of magnitude over the best caesium microwave clocks that realise the SI second. Accordingly, an optical redefinition of the second has been widely d
Externí odkaz:
http://arxiv.org/abs/2410.22973
To operate an optical lattice clock at a fractional uncertainty below $10^{-17}$, one must typically consider not only electric-dipole (E1) interaction between an atom and the lattice light field when characterizing the resulting lattice light shift
Externí odkaz:
http://arxiv.org/abs/2210.14727
Autor:
Herbers, Sofia, Häfner, Sebastian, Dörscher, Sören, Lücke, Tim, Sterr, Uwe, Lisdat, Christian
Publikováno v:
Opt. Lett. 47, pp. 5441-5444 (2022)
We present a transportable ultra-stable clock laser system based on a Fabry-P\'erot cavity with crystalline Al$_{0.92}$Ga$_{0.08}$As/GaAs mirror coatings, fused silica (FS) mirror substrates and a 20~cm-long ultra-low expansion (ULE\textsuperscript{\
Externí odkaz:
http://arxiv.org/abs/2207.08679
Autor:
Dörscher, Sören, Huntemann, Nils, Schwarz, Roman, Lange, Richard, Benkler, Erik, Lipphardt, Burghard, Sterr, Uwe, Peik, Ekkehard, Lisdat, Christian
We report direct measurements of the frequency ratio of the 642 THz ${}^2S_{1/2} (F=0)$--${}^2F_{7/2} (F=3)$ electric octupole transition in ${}^{171}\mathrm{Yb}^+$ and the 429 THz ${}^1S_0$--${}^3P_0$ transition in ${}^{87}\mathrm{Sr}$. A series of
Externí odkaz:
http://arxiv.org/abs/2009.05470
Autor:
Dörscher, Sören, Al-Masoudi, Ali, Bober, Marcin, Schwarz, Roman, Hobson, Richard, Sterr, Uwe, Lisdat, Christian
The frequency stability achieved by an optical atomic clock ultimately depends on the coherence of its local oscillator. Even the best ultrastable lasers only allow interrogation times of a few seconds, at present. Here we present a universal measure
Externí odkaz:
http://arxiv.org/abs/1911.13146
Autor:
Abdel-Hafiz, Moustafa, Ablewski, Piotr, Al-Masoudi, Ali, Martínez, Héctor Álvarez, Balling, Petr, Barwood, Geoffrey, Benkler, Erik, Bober, Marcin, Borkowski, Mateusz, Bowden, William, Ciuryło, Roman, Cybulski, Hubert, Didier, Alexandre, Doležal, Miroslav, Dörscher, Sören, Falke, Stephan, Godun, Rachel M., Hamid, Ramiz, Hill, Ian R., Hobson, Richard, Huntemann, Nils, Coq, Yann Le, Targat, Rodolphe Le, Legero, Thomas, Lindvall, Thomas, Lisdat, Christian, Lodewyck, Jérôme, Margolis, Helen S., Mehlstäubler, Tanja E., Peik, Ekkehard, Pelzer, Lennart, Pizzocaro, Marco, Rauf, Benjamin, Rolland, Antoine, Scharnhorst, Nils, Schioppo, Marco, Schmidt, Piet O., Schwarz, Roman, Şenel, Çağrı, Spethmann, Nicolas, Sterr, Uwe, Tamm, Christian, Thomsen, Jan W., Vianello, Alvise, Zawada, Michał
There has been tremendous progress in the performance of optical frequency standards since the first proposals to carry out precision spectroscopy on trapped, single ions in the 1970s. The estimated fractional frequency uncertainty of today's leading
Externí odkaz:
http://arxiv.org/abs/1906.11495
Autor:
Origlia, Stefano, Pramod, Mysore Srinivas, Schiller, Stephan, Singh, Yeshpal, Bongs, Kai, Schwarz, Roman, Al-Masoudi, Ali, Dörscher, Sören, Herbers, Sofia, Häfner, Sebastian, Sterr, Uwe, Lisdat, Christian
Publikováno v:
Phys. Rev. A 98, 053443 (2018)
Optical lattice clocks with uncertainty and instability in the $10^{-17}$-range and below have so far been demonstrated exclusively using fermions. Here, we demonstrate a bosonic optical lattice clock with $3\times 10^{-18}$ instability and $2.0\time
Externí odkaz:
http://arxiv.org/abs/1803.03157
Autor:
Dörscher, Sören, Schwarz, Roman, Al-Masoudi, Ali, Falke, Stephan, Sterr, Uwe, Lisdat, Christian
Publikováno v:
Phys. Rev. A 97, 063419 (2018)
We investigate scattering of lattice laser radiation in a strontium optical lattice clock and its implications for operating clocks at interrogation times up to several tens of seconds. Rayleigh scattering does not cause significant decoherence of th
Externí odkaz:
http://arxiv.org/abs/1802.02945
We present an analysis of the different types of noise from the detection and interrogation laser in our strontium lattice clock. We develop a noise model showing that in our setup quantum projection noise--limited detection is possible if more than
Externí odkaz:
http://arxiv.org/abs/1507.04949
Autor:
Dörscher, Sören, Thobe, Alexander, Hundt, Bastian, Kochanke, André, Targat, Rodolphe Le, Windpassinger, Patrick, Becker, Christoph, Sengstock, Klaus
We report on the first experimental setup based on a 2D-/3D-MOT scheme to create both Bose-Einstein condensates and degenerate Fermi gases of several ytterbium isotopes. Our setup does not require a Zeeman slower and offers the flexibility to simulta
Externí odkaz:
http://arxiv.org/abs/1303.1105