Zobrazeno 1 - 10
of 123
pro vyhledávání: '"Janne Ruostekoski"'
Autor:
Maitreyi Jayaseelan, Joseph D. Murphree, Justin T. Schultz, Janne Ruostekoski, Nicholas P. Bigelow
Publikováno v:
Communications Physics, Vol 7, Iss 1, Pp 1-9 (2024)
Abstract Atom optics demonstrates optical phenomena with coherent matter waves, providing a foundational connection between light and matter. Significant advances in optics have followed the realization of structured light fields hosting complex sing
Externí odkaz:
https://doaj.org/article/aafdbaab69584a479502a4062e3afc08
Publikováno v:
Physical Review Research, Vol 6, Iss 1, p 013046 (2024)
We systematically and analytically construct a set of spinor wave functions representing defects and textures that continuously penetrate interfaces between coexisting, topologically distinct magnetic phases in a spin-2 Bose-Einstein condensate. Thes
Externí odkaz:
https://doaj.org/article/074d196c2db2415eb1996d12245a8278
Publikováno v:
Communications Physics, Vol 5, Iss 1, Pp 1-8 (2022)
Skyrmions and hopfions are topological elementary excitations originally discussed in particle physics and field theory, and are also created in optical fields. The authors show theoretically that the topology of light beams can be transformed into o
Externí odkaz:
https://doaj.org/article/8c31f0d10ecd4b0daaf6d3ebde9afb52
Autor:
Danica Sugic, Ramon Droop, Eileen Otte, Daniel Ehrmanntraut, Franco Nori, Janne Ruostekoski, Cornelia Denz, Mark R. Dennis
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
One way to describe a particle is as a localised, 3-dimensional topological state, such as a skyrmion or hopfion. Here, the authors demonstrate and characterise particle-like skyrmionic hopfions in a free-space structured light beam.
Externí odkaz:
https://doaj.org/article/c7a2569c99bc4ce9806639665c797996
Publikováno v:
Communications Physics, Vol 5, Iss 1, Pp 1-1 (2022)
Externí odkaz:
https://doaj.org/article/03bab22fd2d34ce48b932d743ee09fa9
Autor:
Mark D. Lee, Janne Ruostekoski
Publikováno v:
Atoms, Vol 3, Iss 3, Pp 450-473 (2015)
We study cavity quantum electrodynamics of Bose-condensed atoms that are subjected to continuous monitoring of the light leaking out of the cavity. Due to a given detection record of each stochastic realization, individual runs spontaneously break th
Externí odkaz:
https://doaj.org/article/fe39166a291c4d59b1e386535fbe7e50
Publikováno v:
Physical Review X, Vol 4, Iss 3, p 031036 (2014)
We show how off-resonant light scattering can provide quantitative information on antiferromagnetic ordering of a two-species fermionic atomic gas in a tightly-confined two-dimensional optical lattice. We analyze the emerging magnetic ordering of ato
Externí odkaz:
https://doaj.org/article/21c5cf5bff1d40c78a562e5e6dcf6e1d
Autor:
Juha Javanainen, Janne Ruostekoski
Publikováno v:
New Journal of Physics, Vol 15, Iss 1, p 013005 (2013)
We develop a classical theoretical description for nonlinear many-body dynamics that incorporates the back-action of a continuous measurement process. The classical approach is compared with the exact quantum solution in an example with an atomic Bos
Externí odkaz:
https://doaj.org/article/206250e4ab6f411d8fca4f0c94ab9c3d
Autor:
Stewart D Jenkins, Janne Ruostekoski
Publikováno v:
New Journal of Physics, Vol 14, Iss 10, p 103003 (2012)
We theoretically analyse the experimental observations of a spectral line collapse in a metamaterial array of asymmetric split ring resonators (Fedotov et al 2010 Phys. Rev. Lett. 104 223901). We show that the ensemble of closely-spaced resonators ex
Externí odkaz:
https://doaj.org/article/4efe95195fa34be281cc9e531a9272e1
Publikováno v:
Physical Review Research. 4
By analyzing the parameters of electronic transitions, we show how bosonic Sr atoms in planar optical lattices can be engineered to exhibit optical magnetism and other higher-order electromagnetic multipoles that can be harnessed for wavefront contro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43a39df867c44add5a484d3d497ca2ce
https://doi.org/10.1103/physrevresearch.4.033242
https://doi.org/10.1103/physrevresearch.4.033242