2 papers
quant-ph2021
Entanglement echo and dynamical entanglement transitions
Kim Pöyhönen, Teemu Ojanen
We formulate dynamical phase transitions in subsystems embedded in larger quantum systems. Introducing the entanglement echo as an overlap of the initial and instantaneous entangle…
cond-mat.mes-hall2019
Topological phases without crystalline counterparts
Daniel Varjas, Alexander Lau, Kim Pöyhönen +3
Recent years saw the complete classification of topological band structures, revealing an abundance of topological crystalline insulators. Here we theoretically demonstrate the exi…