Electron conductance of a cavity-embedded topological 1D chain
- URL: http://arxiv.org/abs/2402.19244v1
- Date: Thu, 29 Feb 2024 15:19:15 GMT
- Title: Electron conductance of a cavity-embedded topological 1D chain
- Authors: Danh-Phuong Nguyen, Geva Arwas, and Cristiano Ciuti
- Abstract summary: We show that electron-photon entanglement produces dramatic differences with respect to the prediction of mean-field theory.
We reveal how the quantization of transport is modified by the cavity vacuum fields for a finite-size chain.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We investigate many-body topological and transport properties of a
one-dimensional Su-Schrieffer-Heeger (SSH) topological chain coupled to the
quantum field of a cavity mode. The quantum conductance is determined via
Green's function formalism in terms of light-matter eigenstates calculated via
exact diagonalization for a finite number of electrons. We show that the
topology of the cavity-embedded many-electron system is described by a
generalized electron-photon Zak marker. We reveal how the quantization of
transport is modified by the cavity vacuum fields for a finite-size chain and
how it is impacted by electronic disorder. Moreover, we show that
electron-photon entanglement produces dramatic differences with respect to the
prediction of mean-field theory, which strongly underestimates cavity-modified
effects.
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