Vacuum induced three-body delocalization in cavity quantum materials
arXiv:2407.15032 · doi:10.1103/PhysRevB.111.134202
Abstract
In this study, we demonstrate that the vacuum itself suffices to delocalize an Anderson insulator inside a cavity. By studying a disordered one-dimensional spinless fermion system coupled to a single photon mode describing the vacuum fluctuation, we find that even though the cavity mode does not qualitatively change the localization behavior for a single-fermion system, it indeed leads to delocalization via a vacuum fluctuation-induced correlated hopping mechanism for systems with at least three fermions. A mobility edge separating the low-energy localized eigenstates and the high-energy delocalized eigenstates has been revealed. It is shown that such a one-dimensional three-fermion system in with correlated hopping can be mapped to a single-particle system with hopping along the face diagonals in a three dimensional lattice. The effect of the dissipation as well as a many-body generalization have also been discussed.
arXiv comment8 pages
References in corpus (32)
- Metal-insulator transition in a weakly interacting many-electron system with localized single-particle states
- Localization of interacting fermions at high temperature
- Observation of many-body localization of interacting fermions in a quasi-random optical lattice
- The many-body localization phase transition
- Ultrastrong coupling between light and matter
- Ultrastrong coupling regimes of light-matter interaction
- Floquet Engineering of Quantum Materials
- Many body localization in Heisenberg XXZ magnet in a random field
- Predicted mobility edges in one-dimensional incommensurate optical lattices: An exactly solvable model of Anderson localization
- Signatures of Many-Body Localization in a Controlled Open Quantum System
- Cavity Quantum Materials
- Cavity-mediated electron-photon superconductivity
- How a small quantum bath can thermalize long localized chains
- Spectral features of a many-body localized system weakly coupled to a heat bath
- Electric field correlation measurements on the electromagnetic vacuum state
- Critical parameters from generalised multifractal analysis at the Anderson transition
- Multifractal analysis with the probability density function at the three-dimensional Anderson transition
- Anderson localization transitions with and without random potentials
- Manipulating quantum materials with quantum light
- Localized systems coupled to small baths: from A to Z
- Cavity-assisted mesoscopic transport of fermions: Coherent and dissipative dynamics
- Quantum Floquet engineering with an exactly solvable tight-binding chain in a cavity
- Ring Structure in the Complex Plane: A Fingerprint of non-Hermitian Mobility Edge
- Cavity Light-Matter Entanglement through Quantum Fluctuations
- Long-range photon fluctuations enhance photon-mediated electron pairing and superconductivity
- Self-organized topological insulator due to cavity-mediated correlated tunneling
- Quantum electron transport controlled by cavity vacuum fields
- Engineering flat bands in twisted-bilayer graphene away from the magic angle with chiral optical cavities
- Electron-photon Chern number in cavity-embedded 2D moiré materials
- First-order photon condensation in magnetic cavities: A two-leg ladder model
- Observation of spin-wave moiré edge and cavity modes in twisted magnetic lattices
- Vacuum-Induced Symmetry Breaking of Chiral Enantiomer Formation in Chemical Reactions