Non-Hermitian many-body topological excitations in interacting quantum dots

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.

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Cited by in corpus (18)

• Many-body topology of non-Hermitian systems
• Symmetry breaking and spectral structure of the interacting Hatano-Nelson model
• Non-Hermitian Topological Phases: Principles and Prospects
• Non-Hermitian strongly interacting Dirac fermions: a quantum Monte-Carlo study
• Topological spin excitations in non-Hermitian spin chains with a generalized kernel polynomial algorithm
• Symmetry-protected exceptional and nodal points in non-Hermitian systems
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• Non-Hermitian chiral anomalies in interacting systems
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