Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Schäffer, Stefan"'
Autor:
Dubey, Swadheen, Kazakov, Georgy A., Heizenreder, Benedikt, Zhou, Sheng, Bennetts, Shayne, Schäffer, Stefan Alaric, Sitaram, Ananya, Schreck, Florian
Continuous superradiance using a narrow optical transition has the potential to improve the short-term stability of state-of-the-art optical clocks. Even though pulsed superradiant emission on a mHz linewidth clock transition has been shown, true con
Externí odkaz:
http://arxiv.org/abs/2409.06575
Autor:
Famà, Francesca, Zhou, Sheng, Heizenreder, Benedikt, Tang, Mikkel, Bennetts, Shayne, Jäger, Simon B., Schäffer, Stefan A., Schreck, Florian
Atoms coupled to cavities provide an exciting playground for the study of fundamental interactions of atoms mediated through a common channel. Many of the applications of cavity-QED and cold-atom experiments more broadly, suffer from limitations caus
Externí odkaz:
http://arxiv.org/abs/2407.18668
Autor:
Bohr, Eliot, Kristensen, Sofus L., Hotter, Christoph, Schäffer, Stefan Alaric, Robinson-Tait, Julian, Thomsen, Jan W., Zelevinsky, Tanya, Ritsch, Helmut, Müller, Jörg Helge
When an inverted ensemble of atoms is tightly packed on the scale of its emission wavelength or when the atoms are collectively strongly coupled to a single cavity mode, their dipoles will align and decay rapidly via a superradiant burst. However, a
Externí odkaz:
http://arxiv.org/abs/2306.12544
The prospects of superradiant lasing on the 7.5 kHz wide $^1$S$_0$-$^3$P$_1$ transition in $^{88}$Sr is explored by using numerical simulations of two systems based on realistic experimental numbers. One system uses the idea of demonstrating continuo
Externí odkaz:
http://arxiv.org/abs/2112.15420
Autor:
Tang, Mikkel, Schäffer, Stefan A., Jørgensen, Asbjørn A., Henriksen, Martin R., Christensen, Bjarke T. R., Müller, Jörg H., Thomsen, Jan W.
Publikováno v:
Phys. Rev. Research 3, 033258 (2021)
Lasing in the bad cavity regime has promising applications in precision metrology due to the reduced sensitivity to cavity noise. Here we investigate the spectral properties and phase behavior of pulsed lasing on the $^1$S$_0 - ^3$P$_1$ line of $^{88
Externí odkaz:
http://arxiv.org/abs/2104.13305
Autor:
Bodine, Martha I., Deschênes, Jean-Daniel, Khader, Isaac H., Swann, William C., Leopardi, Holly, Beloy, Kyle, Bothwell, Tobias, Brewer, Samuel M., Bromley, Sarah L., Chen, Jwo-Sy, Diddams, Scott A., Fasano, Robert J., Fortier, Tara M., Hassan, Youssef S., Hume, David B., Kedar, Dhruv, Kennedy, Colin J., Koepke, Amanda, Leibrandt, David R., Ludlow, Andrew D., McGrew, William F., Milner, William R., Nicolodi, Daniele, Oelker, Eric, Parker, Thomas E., Robinson, John M., Romish, Stefania, Schäffer, Stefan A., Sherman, Jeffrey A., Sonderhouse, Lindsay, Yao, Jian, Ye, Jun, Zhang, Xiaogang, Newbury, Nathan R., Sinclair, Laura C.
Publikováno v:
Phys. Rev. Research 2, 033395 (2020)
We use frequency comb-based optical two-way time-frequency transfer (O-TWTFT) to measure the optical frequency ratio of state-of-the-art ytterbium and strontium optical atomic clocks separated by a 1.5 km open-air link. Our free-space measurement is
Externí odkaz:
http://arxiv.org/abs/2006.01306
Autor:
Network, Boulder Atomic Clock Optical, Collaboration, Beloy, Kyle, Bodine, Martha I., Bothwell, Tobias, Brewer, Samuel M., Bromley, Sarah L., Chen, Jwo-Sy, Deschênes, Jean-Daniel, Diddams, Scott A., Fasano, Robert J., Fortier, Tara M., Hassan, Youssef S., Hume, David B., Kedar, Dhruv, Kennedy, Colin J., Khader, Isaac, Koepke, Amanda, Leibrandt, David R., Leopardi, Holly, Ludlow, Andrew D., McGrew, William F., Milner, William R., Newbury, Nathan R., Nicolodi, Daniele, Oelker, Eric, Parker, Thomas E., Robinson, John M., Romisch, Stefania, Schäffer, Stefan A., Sherman, Jeffrey A., Sinclair, Laura C., Sonderhouse, Lindsay, Swann, William C., Yao, Jian, Ye, Jun, Zhang, Xiaogang
Atomic clocks occupy a unique position in measurement science, exhibiting higher accuracy than any other measurement standard and underpinning six out of seven base units in the SI system. By exploiting higher resonance frequencies, optical atomic cl
Externí odkaz:
http://arxiv.org/abs/2005.14694
Autor:
Schäffer, Stefan A., Tang, Mikkel, Henriksen, Martin R., Jørgensen, Asbjørn A., Christensen, Bjarke T. R., Thomsen, Jan W.
Publikováno v:
Phys. Rev. A 101, 013819 (2020)
Highly stable laser sources based on narrow atomic transitions provide a promising platform for direct generation of stable and accurate optical frequencies. Here we investigate a simple system operating in the high-temperature regime of cold atoms.
Externí odkaz:
http://arxiv.org/abs/1903.12593
Autor:
Yao, Jian, Sherman, Jeff A., Fortier, Tara, Leopardi, Holly, Parker, Thomas, McGrew, William, Zhang, Xiaogang, Nicolodi, Daniele, Fasano, Robert, Schäffer, Stefan, Beloy, Kyle, Savory, Joshua, Romisch, Stefania, Oates, Chris, Diddams, Scott, Ludlow, Andrew, Levine, Judah
Publikováno v:
Phys. Rev. Applied 12, 044069 (2019)
A time scale is a procedure for accurately and continuously marking the passage of time. It is exemplified by Coordinated Universal Time (UTC), and provides the backbone for critical navigation tools such as the Global Positioning System (GPS). Prese
Externí odkaz:
http://arxiv.org/abs/1902.06858
Autor:
Schäffer, Stefan Alaric, Christensen, Bjarke Takashi Røjle, Henriksen, Martin Romme, Thomsen, Jan Westenkær
Publikováno v:
Phys. Rev. A 96, 013847 (2017)
Hybrid systems of cold atoms and optical cavities are promising systems for increasing the stability of laser oscillators used in quantum metrology and atomic clocks. In this paper we map out the atom-cavity dynamics in such a system and demonstrate
Externí odkaz:
http://arxiv.org/abs/1704.08245