Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Arne, Schwettmann"'
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 56:085502
We experimentally demonstrate a new type of spin-mixing interferometry in sodium Bose–Einstein condensates (BECs) based on seeded initial states. Seeding is useful because it speeds up the generation of entangled pairs, allowing many collisions to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::428b68a5d5f812d879e4cd9be56463a8
https://doi.org/10.1088/1361-6455/acc36f
https://doi.org/10.1088/1361-6455/acc36f
We theoretically investigate how entangled atomic states generated via spin-changing collisions in a spinor Bose-Einstein condensate can be designed and controllably prepared for atom interferometry that is robust against common technical issues, suc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::852131e57569433657bc39fc0796da58
Publikováno v:
Physical Review A. 102
Compared to single-component Bose-Einstein condensates, spinor Bose-Einstein condensates display much richer dynamics. In addition to density oscillations, spinor Bose-Einstein condensates exhibit intriguing spin dynamics that is associated with popu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8fc900bbee23a7e057cfc7d4128eabe
https://doi.org/10.1103/physreva.102.023324
https://doi.org/10.1103/physreva.102.023324
Autor:
Qimin Zhang, Arne Schwettmann
Publikováno v:
Physical Review A. 100
We numerically investigate atomic interferometry based on spin-exchange collisions in $F=1$ spinor Bose-Einstein condensates in the regime of long evolution times $t\ensuremath{\gg}h/c$, where $c$ is the spin-dependent interaction energy. We show tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11bac7500b9fd40e0c684ee4eee3eeaa
https://doi.org/10.1103/physreva.100.063637
https://doi.org/10.1103/physreva.100.063637
A versatile microwave source for cold atom experiments controlled by a field programmable gate array
Autor:
Jeremy Norris, Logan Baker, Bao Tran, Arne Schwettmann, Qimin Zhang, Shan Zhong, Isaiah Morgenstern
Publikováno v:
Review of Scientific Instruments. 91:023202
We present a microwave source that is controlled by a commercially available field-programmable gate array (FPGA). Using an FPGA allows for precise control of the time dependent microwave-dressing applied to a sample of trapped cold atoms. We test ou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec6fd825363a115118fa3401736572bb
https://doi.org/10.1063/1.5127880
https://doi.org/10.1063/1.5127880
Autor:
Arne Schwettmann, Paul F. Griffin, H. K. Pechkis, D. P. Fahey, Jonathan Wrubel, Ryan Barnett, Paul D. Lett, Eite Tiesinga, Z. Glassman
The SU(1,1) interferometer was originally conceived as a Mach-Zehnder interferometer with the beam-splitters replaced by parametric amplifiers. The parametric amplifiers produce states with correlations that result in enhanced phase sensitivity. $F=1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25e292067745b8ea4ac65b6f997b7d64
https://europepmc.org/articles/PMC6513353/
https://europepmc.org/articles/PMC6513353/
Autor:
James P. Shaffer, Robert Löw, Jonathon Sedlacek, Harald Kübler, Arne Schwettmann, Tilman Pfau
Publikováno v:
Nature Physics. 8:819-824
Atoms can be used as highly sensitive magnetic-field sensors. By exploiting the effects of electric fields on the optical transitions of excited Rydberg states, it is now demonstrated that it is also possible to probe very weak microwave electric fie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2237747b9fcf81f4180ed121916fb43d
https://doi.org/10.1038/nphys2423
https://doi.org/10.1038/nphys2423
Publikováno v:
Nature Physics. 5:581-585
We report the observation of cold Cs Rydberg-atom molecules bound at internuclear separations of R∼3–9 μm. The bound states result from avoided crossings between Rydberg-atom-pair interaction potentials in an applied electric field. The molecula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be477c8c31f3ce04e8feaa8c94ac896c
https://doi.org/10.1038/nphys1307
https://doi.org/10.1038/nphys1307