Publications Lauritz KLAUS

2023

Invited Talk

• L. Klaus, T. Bland, C. Politi, G. Lamporesi, E. Casotti, R. N. Bisset, M. J. Mark, F. Ferlaino, E. Poli Rotating dipolar quantum gases, Unravelling quantum many-body physics with long-range interacting platforms (Cambridge) (2023-05-10), (ID: 721189)

Lecture

• L. Klaus Many-body physics with ultracold magnetic atoms: From supersolids to vortices in neutron stars, MoSaiQC Autumn School on Quantum Optics, Cold Atoms and Laser Technologies (Vienna) (2023-09-14), (ID: 721193)

Posters

• C. Ulm, E. Casotti, E. Poli, L. Klaus, C. Politi, A. Litvinov, T. Bland, A. Di Carli, M. J. Mark, F. Ferlaino Observation of vortices in dipolar quantum gases of dysprosium, Bose-Einstein Condensation (BEC 2023) (Sant Feliu de Guíxols) (2023-09-10), (ID: 721203)
• A. Litvinov, E. Casotti, E. Poli, C. Politi, T. Bland, C. Ulm, L. Klaus, M. J. Mark, F. Ferlaino Vortices in dipolar supersolids of dysprosium, Long-range workshop 2023 (San Sebastian) (2023-06-09), (ID: 721210)
• L. Klaus, E. Casotti, C. Politi, T. Bland, E. Poli, R. N. Bisset, M. J. Mark, F. Ferlaino Vortex nucleation in a dipolar condensate, ITAMP workshop - Unravelling quantum many-body physics with long-range interacting platforms (Cambridge) (2023-05-11), (ID: 721206)

Talks

• L. Klaus, T. Bland, E. Poli, C. Politi, G. Lamporesi, R. N. Bisset, M. J. Mark, F. Ferlaino Observation of vortices and vortex stripes in a dipolar BEC of magnetic atoms, 54th annual meeting of the APS Division of Atomic, Molecular and Optical physics (DAMOP) (Spokane) (2023-06-07), (ID: 721190)
• L. Klaus, C. Politi, E. Casotti, G. Natale, L. Lafforgue, T. Bland, E. Poli, F. Ferlaino, M. J. Mark Supersolidity and Bloch oscillations in dipolar quantum gases, DPG-Frühjahrstagung der Sektion Atome, Moleküle, Quantenoptik und Photonik (SAMOP) (Hannover) (2023-03-09), (ID: 721191)
• T. Bland, L. Klaus, E. Poli, C. Politi, G. Lamporesi, E. Casotti, R. N. Bisset, M. J. Mark, F. Ferlaino Observation of vortices and vortex stripes in a dipolar BEC of Dysprosium, DPG-Frühjahrstagung der Sektion Atome, Moleküle, Quantenoptik und Photonik (SAMOP) (Hannover) (2023-03-06), (ID: 721192)

2022

Articles

• L. Klaus, T. Bland, E. Poli, C. Politi, G. Lamporesi, E. Casotti, R. N. Bisset, M. J. Mark, F. Ferlaino Observation of vortices and vortex stripes in a dipolar condensate, Nature Phys. 18 1458 (2022-10-31), http://dx.doi.org/10.1038/s41567-022-01793-8 doi:10.1038/s41567-022-01793-8 (ID: 720846)
• M. Norcia, E. Poli, C. Politi, L. Klaus, T. Bland, M. J. Mark, L. Santos, R. N. Bisset, F. Ferlaino Can angular oscillations probe superfluidity in dipolar supersolids?, Phys. Rev. Lett. 129 40403 (2022-07-22), http://dx.doi.org/10.1103/PhysRevLett.129.040403 doi:10.1103/PhysRevLett.129.040403 (ID: 720697) Toggle Abstract
  Angular oscillations can provide a useful probe of the superfluid properties of a system. Such<br /> measurements have recently been applied to dipolar supersolids, which exhibit both density modulation and phase coherence, and for which robust probes of superfluidity are particularly interesting.<br /> So far, these investigations have been confined to linear droplet arrays. Here, we explore angular<br /> oscillations in systems with 2D structure, which in principle have greater sensitivity to superfluidity.<br /> Surprisingly, in both experiment and simulation, we find that the frequency of angular oscillations<br /> remains nearly unchanged even when the superfluidity of the system is altered dramatically. This<br /> indicates that angular oscillation measurements do not always provide a robust experimental probe<br /> of superfluidity with typical experimental protocols.
• T. Bland, E. Poli, C. Politi, L. Klaus, M. Norcia, F. Ferlaino, L. Santos, R. N. Bisset Two-Dimensional Supersolid Formation in Dipolar Condensates, Phys. Rev. Lett. 128 195302 (2022-05-13), http://dx.doi.org/10.1103/PhysRevLett.128.195302 doi:10.1103/PhysRevLett.128.195302 (ID: 720678)

Invited Talks

• Claudia Politi, Matthew Norcia, Lauritz Klaus, Thomas Bland, Elena Poli, Eva Casotti, Manfred J. Mark, Francesca Ferlaino Many-body quantum phases in dipolar gases, EMMI Workshop on Long-Range Ultracold Interactions 2022 (2022-09-06) URL (2022-09-08), (ID: 720945)
• Manfred J. Mark, Gabriele Natale, Alexander Patscheider, Claudia Politi, Lauritz Klaus, Elena Poli, Thomas Bland, Matthew Norcia, Russell N. Bisset, Francesca Ferlaino Few- and many-body physics with ultracold dipolar quantum gases, 23rd European Conference on the Dynamics of Molecular Systems (MOLEC 2022) (2022-08-21) URL (2022-08-26), (ID: 720948)

Posters

• Eva Casotti, Lauritz Klaus, Claudia Politi, Thomas Bland, Elena Poli, Russell N. Bisset, Manfred J. Mark, Francesca Ferlaino Vortex nucleation in a dipolar condensate, EMMI Workshop on Long-Range Ultracold Interactions 2022 (2022-09-06) URL (2022-09-07), (ID: 720943)
• Claudia Politi, Lauritz Klaus, Eva Casotti, Matthew Norcia, Manfred J. Mark, Francesca Ferlaino Many-body quantum phases in ultracold dipolar gases, Quantum Matter International Conference (2022-06-21) URL (2022-06-22), (ID: 720942)
• Manfred J. Mark, Claudia Politi, Lauritz Klaus, Elena Poli, Thomas Bland, Matthew Norcia, Russell N. Bisset, Francesca Ferlaino Supersolidity in dipolar quantum gases, Finite Temperature Non-equilibrium Superfluid Systems 2022 (2022-05-02) URL (2022-05-03), (ID: 720946)
• Eva Casotti, Lauritz Klaus, Claudia Politi, Maximilian Sohmen, Matthew Norcia, Manfred J. Mark, Francesca Ferlaino Towards an erbium-dysprosium quantum gas microscope, Frontiers of Quantum Gas Microscopy (2022-04-03) (2022-04-04), (ID: 720941)

Talks

• Manfred J. Mark, Gabriele Natale, Alexander Patscheider, Claudia Politi, Lauritz Klaus, Elena Poli, Thomas Bland, Matthew Norcia, Russell N. Bisset, Francesca Ferlaino Supersolidity, Bloch oscillations and vortices in dipolar quantum gases, 777. WE-Heraeus-Seminar: Ultracold Quantum Matter: Basic Research and Applications (2022-12-06) URL (2022-12-15), (ID: 720949)
• Manfred J. Mark, Claudia Politi, Lauritz Klaus, Elena Poli, Thomas Bland, Matthew Norcia, Russell N. Bisset, Francesca Ferlaino Supersolidity and Vortices in dipolar quantum gases , MAQS Status meeting (2022-06-08) URL (2022-06-09), (ID: 720947)
• Lauritz Klaus, Matthew Norcia, Elena Poli, Claudia Politi, Thomas Bland, Manfred J. Mark, Luis Santos, Russell N. Bisset, Francesca Ferlaino Angular oscillations in a 2D supersolid of Dysprosium, 2022 DAMOP meeting Orlando (2022-05-30) URL (2022-05-31), (ID: 720954)

2021

Articles

• E. Poli, T. Bland, C. Politi, L. Klaus, M. Norcia, F. Ferlaino, R. N. Bisset, L. Santos Maintaining supersolidity in one and two dimensions, Phys. Rev. A 104 63307 (2021-12-09), http://dx.doi.org/10.1103/PhysRevA.104.063307 doi:10.1103/PhysRevA.104.063307 (ID: 720729) Toggle Abstract
  We theoretically investigate supersolidity in three-dimensional dipolar Bose-Einstein condensates. We focus on the role of trap geometry in determining the dimensionality of the resulting droplet arrays, which range from one-dimensional to zigzag, through to two-dimensional supersolids in circular traps. Supersolidity is well established in one-dimensional arrays, and may be just as favorable in two-dimensional arrays provided that one appropriately scales the atom number to the trap volume. We develop a tractable variational model—which we benchmark against full numerical simulations—and use it to study droplet crystals and their excitations. We also outline how exotic ring and stripe states may be created with experimentally feasible parameters. Our work paves the way for future studies of two-dimensional dipolar supersolids in realistic settings.
• M. Norcia, C. Politi, L. Klaus, E. Poli, M. Sohmen, M. J. Mark, R. N. Bisset, L. Santos, F. Ferlaino Two-dimensional supersolidity in a dipolar quantum gas, Nature 596 361 (2021-08-18), http://dx.doi.org/10.1038/s41586-021-03725-7 doi:10.1038/s41586-021-03725-7 (ID: 720624)
• M. Sohmen, C. Politi, L. Klaus, L. Chomaz, M. J. Mark, M. Norcia, F. Ferlaino Birth, life, and death of a dipolar supersolid, Phys. Rev. Lett. 126 233401 (2021-06-07), http://dx.doi.org/10.1103/PhysRevLett.126.233401 doi:10.1103/PhysRevLett.126.233401 (ID: 720625) Toggle Abstract
  In the short time since the first observation of supersolid states of ultracold dipolar atoms, substantial progress has been made in understanding the zero-temperature phase diagram and low-energy excitations of these systems. Less is known, however, about their finite-temperature properties, particularly relevant for supersolids formed by cooling through direct evaporation. Here, we explore this realm by characterizing the evaporative formation and subsequent decay of a dipolar supersolid by combining high-resolution in-trap imaging with time-of-flight observables. As our atomic system cools toward quantum degeneracy, it first undergoes a transition from thermal gas to a crystalline state with the appearance of periodic density modulation. This is followed by a transition to a supersolid state with the emergence of long-range phase coherence. Further, we explore the role of temperature in the development of the modulated state.

Poster

• L. Klaus Exploring the phase diagram of supersolid Dysprosium gases, Young Atom Optician conference (YAO) (Online, 2021-05-26) URL (2021-05-27), (ID: 720763)