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André Eckardt (MPIPKS Dresden - sudetingų sistemu Makso Planko institutas) Dynamically creating artificial gauge fields for neutral atoms in optical lattices
Antradienį gegužes 21 d. 11 val. salėje (A. Goštauto 12, 432 k.) ivyks
Instituto jungtinis teorinis seminaras
André Eckardt (MPIPKS Dresden - sudetingų sistemu Makso Planko institutas) skaitys pranešimą:
Dynamically creating artificial gauge fields for neutral atoms in optical lattices
Kviečiame dalyvauti!
PRANEŠIMO SANTRAUKA: In the last decade there has been considerable progress in the experimental realization of artificial many-body systems made of ultracold neutral atoms in optical lattices potentials. These systems are extremely clean, well isolated from their environment, and highly tunable (also during the experiment). This makes them a flexible platform for engineering many-body quantum physics in and also out-of equilibirum. An important ingredient for the realization of intriguing phenomena such as the quantum Hall effects is the abilty to create artificial gauge potentials that allow to mimic strong magnetic fields. A special interest lies in those regimes where the length scale of the lattice is relevant. This can happen either if the gauge field is modulated within the elementary lattice cell like in topological insulators or if a uniform field is so strong that the magnetic length becomes comparable to the lattice constant. We have proposed a scheme for the creation of strong tunable gauge fields in optical lattices that is based on dressing the system with rapid symmetry-breaking time-periodic forcing [1,2]. Our method does not rely on the internal structure of the atoms and is easy to implement experimentally; its feasibility has been demonstrated in first experiments [2-4] . Several variants of the scheme will be presented that can be used to mimic both abelian magnetic fields or non-abelian spin-orbit coupling in different lattice geometries, e. g. in order to realize a topological insulator [2] or to control time-reversal-symmetry breaking in a triangular lattice with kinetic frustration [1,3].
[1] J Struck, C Ölschläger, M Weinberg, P Hauke, J Simonet, A Eckardt, M Lewenstein, K Sengstock, and P Windpassinger, Phys. Rev. Lett. 108, 225304 (2012)
[2] P Hauke, O Tieleman, A Celi, C Ölschläger, J Simonet, J Struck, MWeinberg, P Windpassinger, K Sengstock, M Lewenstein, and A Eckardt, Phys. Rev. Lett. 109, 145301 (2012)
[3] J Struck, C Ölschläger, R Le Targat, P Soltan-Panahi, A Eckardt, M Lewenstein, P Windpassinger, and K Sengstock, Science 333, 996 (2011) [4] J Struck, M Weinberg, C Ölschläger, P Windpassinger, J Simonet, K Sengstock, R Höppner, P Hauke, A Eckardt, M Lewenstein, L Mathey, arXiv:1304.5520
André Eckardt (MPIPKS Dresden - sudetingų sistemu Makso Planko institutas) skaitys pranešimą:
Dynamically creating artificial gauge fields for neutral atoms in optical lattices
Kviečiame dalyvauti!
PRANEŠIMO SANTRAUKA: In the last decade there has been considerable progress in the experimental realization of artificial many-body systems made of ultracold neutral atoms in optical lattices potentials. These systems are extremely clean, well isolated from their environment, and highly tunable (also during the experiment). This makes them a flexible platform for engineering many-body quantum physics in and also out-of equilibirum. An important ingredient for the realization of intriguing phenomena such as the quantum Hall effects is the abilty to create artificial gauge potentials that allow to mimic strong magnetic fields. A special interest lies in those regimes where the length scale of the lattice is relevant. This can happen either if the gauge field is modulated within the elementary lattice cell like in topological insulators or if a uniform field is so strong that the magnetic length becomes comparable to the lattice constant. We have proposed a scheme for the creation of strong tunable gauge fields in optical lattices that is based on dressing the system with rapid symmetry-breaking time-periodic forcing [1,2]. Our method does not rely on the internal structure of the atoms and is easy to implement experimentally; its feasibility has been demonstrated in first experiments [2-4] . Several variants of the scheme will be presented that can be used to mimic both abelian magnetic fields or non-abelian spin-orbit coupling in different lattice geometries, e. g. in order to realize a topological insulator [2] or to control time-reversal-symmetry breaking in a triangular lattice with kinetic frustration [1,3].
[1] J Struck, C Ölschläger, M Weinberg, P Hauke, J Simonet, A Eckardt, M Lewenstein, K Sengstock, and P Windpassinger, Phys. Rev. Lett. 108, 225304 (2012)
[2] P Hauke, O Tieleman, A Celi, C Ölschläger, J Simonet, J Struck, MWeinberg, P Windpassinger, K Sengstock, M Lewenstein, and A Eckardt, Phys. Rev. Lett. 109, 145301 (2012)
[3] J Struck, C Ölschläger, R Le Targat, P Soltan-Panahi, A Eckardt, M Lewenstein, P Windpassinger, and K Sengstock, Science 333, 996 (2011) [4] J Struck, M Weinberg, C Ölschläger, P Windpassinger, J Simonet, K Sengstock, R Höppner, P Hauke, A Eckardt, M Lewenstein, L Mathey, arXiv:1304.5520
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