517 citations · 5.1k across the 73 of their papers we have counts for
73 papers
Pairing-induced phase transition in the non-reciprocal Kitaev chain
Pietro Brighi, Andreas Nunnenkamp
Investigating the robustness of non-reciprocity in the presence of competing interactions is central to understanding non-reciprocal quantum matter. In this work, we use reservoir…
Unifying framework for non-Hermitian and Hermitian topology in driven-dissipative systems
Clara C. Wanjura, Andreas Nunnenkamp
Recently, a one-to-one correspondence between non-trivial non-Hermitian topology and directional amplification has been demonstrated, theoretically and experimentally, for the case…
Restoring thermalization in long-range quantum magnets with staggered magnetic fields
Lucas Winter, Pietro Brighi, Andreas Nunnenkamp
Quantum systems with strong long-range interactions are thought to resist thermalization because of their discrete energy spectra. We show that applying a staggered magnetic field…
Non-reciprocal dynamics and the non-Hermitian skin effect of repulsively bound pairs
Pietro Brighi, Andreas Nunnenkamp
We study the dynamics of a Bose-Hubbard model coupled to an engineered environment which in the non-interacting limit is described by the celebrated Hatano-Nelson model. At strong…
Optomechanical realization of the bosonic Kitaev-Majorana chain
Jesse J. Slim, Clara C. Wanjura, Matteo Brunelli +3
The fermionic Kitaev chain is a canonical model featuring topological Majorana zero modes. We report the experimental realization of its bosonic analogue in a nano-optomechanical n…
The non-reciprocal Dicke model
Ezequiel I. Rodríguez Chiacchio, Andreas Nunnenkamp, Matteo Brunelli
We investigate the physics of an open two-component Dicke model, where the light field mediates non-reciprocal interactions between two spin species. We show that the model, which…