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pro vyhledávání: '"Pedersen, Poul L."'
Autor:
Kristensen, Mick A., Gajdacz, Miroslav, Pedersen, Poul L., Klempt, Carsten, Sherson, Jacob F., Arlt, Jan J., Hilliard, Andrew J.
Publikováno v:
J. Phys. B 50, 034004 (2017)
We demonstrate that a dispersive imaging technique based on the Faraday effect can measure the atom number in a large, ultracold atom cloud with a precision below the atom shot noise level. The minimally destructive character of the technique allows
Externí odkaz:
http://arxiv.org/abs/1608.06814
Autor:
Gajdacz, Miroslav, Hilliard, Andrew J., Kristensen, Mick A., Pedersen, Poul L., Klempt, Carsten, Arlt, Jan J., Sherson, Jacob F.
Publikováno v:
Phys. Rev. Lett. 117, 073604 (2016)
We prepare number stabilized ultracold clouds through the real-time analysis of non-destructive images and the application of feedback. In our experiments, the atom number ${N\sim10^6}$ is determined by high precision Faraday imaging with uncertainty
Externí odkaz:
http://arxiv.org/abs/1604.05087
Autor:
Pedersen, Poul L., Gajdacz, Miroslav, Deuretzbacher, Frank, Santos, Luis, Klempt, Carsten, Sherson, Jacob F., Hilliard, Andrew J., Arlt, Jan J.
Publikováno v:
Phys. Rev. A 89 (2014), 051603(R)
We have investigated spin dynamics in a 2D quantum gas. Through spin-changing collisions, two clouds with opposite spin orientations are spontaneously created in a Bose-Einstein condensate. After ballistic expansion, both clouds acquire ring-shaped d
Externí odkaz:
http://arxiv.org/abs/1404.7385
Autor:
Pedersen, Poul L., Gajdacz, Miroslav, Winter, Nils, Hilliard, Andrew J., Sherson, Jacob F., Arlt, Jan
Publikováno v:
Phys. Rev. A 88, 023620 (2013)
Within the combined potential of an optical lattice and a harmonic magnetic trap, it is possible to form matter wave packets by intensity modulation of the lattice. An analysis of the production and motion of these wave packets provides a detailed un
Externí odkaz:
http://arxiv.org/abs/1306.1082
Autor:
Gajdacz, Miroslav, Pedersen, Poul L., Mørch, Troels, Hilliard, Andrew J., Arlt, Jan, Sherson, Jacob F.
Publikováno v:
Rev. Sci. Instrum. 84, 083105 (2013)
We describe an easily implementable method for non-destructive measurements of ultracold atomic clouds based on dark field imaging of spatially resolved Faraday rotation. The signal-to-noise ratio is analyzed theoretically and, in the absence of expe
Externí odkaz:
http://arxiv.org/abs/1301.3018
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