Non-Hermitian many-body topological excitations in interacting quantum dots
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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2022-01-28
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en
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6
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PHYSICAL REVIEW RESEARCH, Volume 4, issue 1, pp. 1-6
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.Description
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Hyart, T & Lado, J 2022, ' Non-Hermitian many-body topological excitations in interacting quantum dots ', PHYSICAL REVIEW RESEARCH, vol. 4, no. 1, L012006, pp. 1-6 . https://doi.org/10.1103/PhysRevResearch.4.L012006