New method for predicting the behavior of quantum devices provides crucial tool for real-world applications

https://phys.org/news/2023-03-method-behavior-quantum-devices-crucial.html

"protect quantum information in quantum devices... combines techniques from two domains, quantum many-body physics and non-Hermitian quantum physics... quantum device is host to so-called non-Hermitian topology, it leads to robustly protected quantum excitations whose resilience stems from the very fact that they are open to the environment... solve correlated quantum problems that present dissipation and quantum many-body interactions simultaneously"