54 citations · 130 across the 7 of their papers we have counts for
7 papers
Theory of Nonlinear Spectroscopy of Quantum Magnets
Anubhav Srivastava, Stefan Birnkammer, GiBaik Sim +2
Two-dimensional coherent spectroscopy (2DCS) is an established method for characterizing molecules and has been proposed in the THz regime as a new tool for probing exotic excitati…
Scattering Theory of Chiral Edge Modes in Topological Magnon Insulators
Stefan Birnkammer, Michael Knap, Johannes Knolle +2
Topological magnon insulators exhibit robust edge modes with chiral properties similar to quantum Hall edge states. However, due to their strong localization at the edges, interact…
Deconfined Quantum Criticality in the long-range, anisotropic Heisenberg Chain
Anton Romen, Stefan Birnkammer, Michael Knap
Deconfined quantum criticality describes continuous phase transitions that are not captured by the Landau-Ginzburg paradigm. Here, we investigate deconfined quantum critical points…
Signatures of Domain-Wall Confinement in Raman Spectroscopy of Ising Spin Chains
Stefan Birnkammer, Johannes Knolle, Michael Knap
Mesonic bound states of domain walls can be stabilized in quasi one-dimensional magnetic compounds. Here, we theoretically study the Raman light scattering response of a twisted Ki…
Observation of magnon bound states in the long-range, anisotropic Heisenberg model
Florian Kranzl, Stefan Birnkammer, Manoj K. Joshi +4
Over the recent years coherent, time-periodic modulation has been established as a versatile tool for realizing novel Hamiltonians. Using this approach, known as Floquet engineerin…
Prethermalization in one-dimensional quantum many-body systems with confinement
Stefan Birnkammer, Alvise Bastianello, Michael Knap
Unconventional nonequilibrium phases with restricted correlation spreading and slow entanglement growth have been proposed to emerge in systems with confined excitations, calling t…
Characterizing Topological Excitations of a Long-Range Heisenberg Model with Trapped Ions
Stefan Birnkammer, Annabelle Bohrdt, Fabian Grusdt +1
Realizing and characterizing interacting topological phases in synthetic quantum systems is a formidable challenge. Here, we propose a Floquet protocol to realize the antiferromagn…