530 citations · 1.3k across the 14 of their papers we have counts for
6 papers · 1 filter
Kramers' degeneracy for open systems in thermal equilibrium
Simon Lieu, Max McGinley, Oles Shtanko +2
Kramers' degeneracy theorem underpins many interesting effects in quantum systems with time-reversal symmetry. We show that the generator of dynamics for Markovian open fermionic s…
Tenfold Way for Quadratic Lindbladians
Simon Lieu, Max McGinley, Nigel R. Cooper
We uncover a topological classification applicable to open fermionic systems governed by a general class of Lindblad master equations. These `quadratic Lindbladians' can be capture…
Non-Hermitian Majorana modes protect degenerate steady states
Simon Lieu
We introduce non-Hermitian generalizations of Majorana zero modes (MZMs) which appear in the topological phase of a weakly dissipative Kitaev chain coupled to a Markovian bath. Not…
Topological symmetry classes for non-Hermitian models and connections to the bosonic Bogoliubov-de Gennes equation
Simon Lieu
The Bernard-LeClair (BL) symmetry classes generalize the ten-fold way classes in the absence of Hermiticity. Within the BL scheme, time-reversal and particle-hole come in two flavo…
Topological phases in the non-Hermitian Su-Schrieffer-Heeger model
Simon Lieu
We address the conditions required for a topological classification in the most general form of the non-Hermitian Su-Schrieffer-Heeger (SSH) model. Any chirally-symmet…
\textit{Ab-initio} Tight-Binding Hamiltonian for Transition Metal Dichalcogenides
Shiang Fang, Rodrick Kuate Defo, Sharmila N. Shirodkar +3
We present an accurate \textit{ab-initio} tight-binding hamiltonian for the transition-metal dichalcogenides, MoS, MoSe, WS, WSe, with a minimal basis (the \textit{…