316 citations · 1.6k across the 16 of their papers we have counts for
8 papers · 1 filter
A recipe for topological observables of density matrices
Charles-Edouard Bardyn
Meaningful topological invariants for mixed quantum states are challenging to identify as there is no unique way to define them, and most choices do not directly relate to physical…
Probing the topology of density matrices
Charles-Edouard Bardyn, Lukas Wawer, Alexander Altland +2
The mixedness of a quantum state is usually seen as an adversary to topological quantization of observables. For example, exact quantization of the charge transported in a so-calle…
Chiral Bogoliubons in Nonlinear Bosonic Systems
Charles-Edouard Bardyn, Torsten Karzig, Gil Refael +1
We present a versatile scheme for creating topological Bogoliubov excitations in weakly interacting bosonic systems. Our proposal relies on a background stationary field that consi…
Topological Polaritons and Excitons in Garden Variety Systems
Charles-Edouard Bardyn, Torsten Karzig, Gil Refael +1
Topological polaritons (aka topolaritons) present a new frontier for topological behavior in solid-state systems. They combine light and matter, which allows to probe and manipulat…
Topological Polaritons
Torsten Karzig, Charles-Edouard Bardyn, Netanel Lindner +1
The interaction between light and matter can give rise to novel topological states. This principle was recently exemplified in Floquet topological insulators, where \emph{classical…
Seeing bulk topological properties of band insulators in small photonic lattices
C. -E. Bardyn, S. D. Huber, O. Zilberberg
We present a general scheme for measuring the bulk properties of non-interacting tight-binding models realized in arrays of coupled photonic cavities. Specifically, we propose to i…
Majorana-Like Modes of Light in a One-Dimensional Array of Nonlinear Cavities
C. -E. Bardyn, A. Imamoglu
The search for Majorana fermions in p-wave paired fermionic systems has recently moved to the forefront of condensed-matter research. Here we propose an alternative route and show…
Majorana Modes in Driven-Dissipative Atomic Superfluids With Zero Chern Number
C. -E. Bardyn, M. A. Baranov, E. Rico +3
We investigate dissipation-induced p-wave paired states of fermions in two dimensions and show the existence of spatially separated Majorana zero modes in a phase with vanishing Ch…