Abstract
Quantum dots are one of the paradigmatic solid-state systems for quantum engineering, providing an outstanding tunability to explore fundamental quantum phenomena. Here we show that non-Hermitian many-body topological modes can be realized in a quantum dot chain by utilizing a gate-tunable modulation of dissipation, and they emerge purely because of the non-Hermiticity. By exactly solving the non-Hermitian interacting description both with exact diagonalization and tensor networks, we demonstrate that these topological modes are robust even in the presence strong interactions, leading to a strongly correlated topological many-particle state. Our results put forward quantum dot arrays as a platform for engineering non-Hermitian many-body topological modes, and highlight the resilience of non-Hermitian topology to electronic interactions.
| Original language | English |
|---|---|
| Article number | L012006 |
| Journal | Physical review research |
| Volume | 4 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Mar 2022 |
| MoE publication type | A1 Journal article-refereed |
Funding
We acknowledge the computational resources provided by the Aalto Science-IT project. J.L.L. acknowledges financial support from the Academy of Finland Projects No. 331342 and No. 336243. The research was also partially supported by the Foundation for Polish Science through the IRA Programme co-financed by EU within SG OP.
