Homepage of Jonas Larson

About myself

Since 2015 I'm a lecturer in the condensed matter theory group at Stockholm University. I did my PhD in the group of Stig Stenholm and thereby I have my background in quantum optics. My first postdoc was in the group of Maciej Lewenstein at ICFO in Barcelona. After two years at ICFO I became a fellow at NORDITA in Stockholm.

My research interests include a broad range of topics like quantum optics, quantum many-body theory, quantum information, and quantum chaos. More recently I have worked on ultracold atoms in optical lattices and how it is used to simulate quantum magnetism, synthetic gauge fields in cold gases or in quantum optical systems, chaos and how it relates to quantum thermalization, and open quantum systems and continuous quantum measurements.

Some recent publications

• J. Hannukainen and J. Larson, Dissipation driven quantum phase transitions and symmetry breaking, arXiv:1703.10238.
• J. Larson and E. K. Irish, Some remarks on 'superradiant' phase transitions in light-matter systems, arXiv:1612.00336. J. Phys. A: Math. Gen. 50, 17002 (2017). Invited contribution to special issue on " Semi-classical and quantum Rabi models".
• T. Mathisen and J. Larson, A view on the open STIRAP problem, arXiv:1609.09673.
• C. Joshi, J. Larson, and T. P. Spiller, Quantum state engineering in hybrid open quantum systems, arXiv:1509.03599. Phys. Rev. A 93, 043818 (2016)
• C. Joshi and J. Larson, Cavity assisted generation of sustainable macroscopic entanglement of ultracold gases, arXiv:1506.09094, Atoms 3, 348 (2015). Invited contribution to special issue on " Cavity Quantum Electrodynamics with Ultracold Atoms".
• F. Pinheiro and J. Larson, Disordered cold atoms in different symmetry classes, arXiv:1503.07777, Phys. Rev. A 92, 023612 (2015).
• F. Pinheiro, J.-P. Martikainen, and J. Larson, Phases of d-orbital bosons in optical lattices, New J. Phys. 17, 053004 (2015), arXiv:1501.03514.
• E. J. Mumford, D. H. J. O'Dell, and J. Larson, Dicke-type phase transition in a multimode optomechanical system Ann. Phys. 527, 115 (2015), arXiv:1310.7528. Invited contribution to special issue on " Quantum and Hybrid Mechanical Systems - From Fundamentals to Applications".

Some recent talks

• "Structure of non-equilibrium quantum phase transitions".
• "Incoherent Dicke model - new type of phase transition".
• "Open quantum phase transitions - universality and underlying mechanism".
• "Molecular gauge theory - bridging cold gases, condensed matter, and molecular physics".
• "Orbital physics as a route to simulating quantum magnetism with optical lattices".
• "A little on chaos, thermalisation, localisation... (well, dynamics in general) in quantum systems".
• "Disorder and symmetry classes in cold atom systems".
• "Towards new states of matter with atoms and photons".
• "Thermalization in closed quantum systems".
• "Quantum Simulators: A new tool to tackle computational quantum many-body problems".