Abstract
| Language | English |
|---|---|
| Article number | 33 |
| Number of pages | 9 |
| Journal | Communications Physics |
| Volume | 1 |
| DOIs | |
| Publication status | Published - 10 Jul 2018 |
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Keywords
- cold atoms
- magnetic interactions
- optical lattices
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Spontaneous light-mediated magnetism in cold atoms. / Krešić, I.; Labeyrie, G.; Robb, G.R.M.; Oppo, G.-L.; Gomes, P.M.; Griffin, P.; Kaiser, R.; Ackemann, T.
In: Communications Physics, Vol. 1, 33, 10.07.2018.Research output: Contribution to journal › Article
TY - JOUR
T1 - Spontaneous light-mediated magnetism in cold atoms
AU - Krešić, I.
AU - Labeyrie, G.
AU - Robb, G.R.M.
AU - Oppo, G.-L.
AU - Gomes, P.M.
AU - Griffin, P.
AU - Kaiser, R.
AU - Ackemann, T.
PY - 2018/7/10
Y1 - 2018/7/10
N2 - Cold atom setups are now commonly employed in simulations of condensed matter phenomena. We present a novel approach to induce strong magnetic interactions between atoms on a self-organized lattice using diffraction of light. Diffractive propagation of structured light fields leads to an exchange between phase and amplitude modulated planes which can be used to couple atomic degrees of freedom via optical pumping nonlinearities. In the experiment a cold cloud of Rb atoms placed near a retro-reflecting mirror is driven by a detuned pump laser. We demonstrate spontaneous magnetic ordering in the Zeeman sublevels of the atomic ground state: anti-ferromagnetic structures on a square lattice and ferrimagnetic structures on a hexagonal lattice in zero and a weak longitudinal magnetic field, respectively. The ordered state is destroyed by a transverse magnetic field via coherent dynamics. A connection to the transverse (quantum) Ising model is drawn.
AB - Cold atom setups are now commonly employed in simulations of condensed matter phenomena. We present a novel approach to induce strong magnetic interactions between atoms on a self-organized lattice using diffraction of light. Diffractive propagation of structured light fields leads to an exchange between phase and amplitude modulated planes which can be used to couple atomic degrees of freedom via optical pumping nonlinearities. In the experiment a cold cloud of Rb atoms placed near a retro-reflecting mirror is driven by a detuned pump laser. We demonstrate spontaneous magnetic ordering in the Zeeman sublevels of the atomic ground state: anti-ferromagnetic structures on a square lattice and ferrimagnetic structures on a hexagonal lattice in zero and a weak longitudinal magnetic field, respectively. The ordered state is destroyed by a transverse magnetic field via coherent dynamics. A connection to the transverse (quantum) Ising model is drawn.
KW - cold atoms
KW - magnetic interactions
KW - optical lattices
UR - https://www.nature.com/commsphys/
U2 - 10.1038/s42005-018-0034-3
DO - 10.1038/s42005-018-0034-3
M3 - Article
VL - 1
JO - Communications Physics
T2 - Communications Physics
JF - Communications Physics
SN - 2399-3650
M1 - 33
ER -