Hybrid quantum lattice model: Polaritons, photons, and spin waves propagation

• URL: http://arxiv.org/abs/2507.12319v2
• Date: Tue, 22 Jul 2025 19:13:57 GMT
• Title: Hybrid quantum lattice model: Polaritons, photons, and spin waves propagation
• Authors: Maritza Ahumada, Natalia Valderrama-Quinteros, Diego Tancara, Guillermo Romero,
• Abstract summary: Controlling the propagation of quantum excitations in low-dimensional systems is pivotal for quantum technologies.<n>We propose a one-dimensional hybrid quantum lattice model, where each lattice unit integrates a single-mode resonator that interacts with a two-level system.<n>This configuration enables the coherent propagation of polaritons, spin waves, and photons, depending on the interplay between light-matter coupling and qubit-qubit interactions.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Controlling the propagation of quantum excitations in low-dimensional systems is pivotal for quantum technologies, including communication networks and quantum simulators. We propose a one-dimensional hybrid quantum lattice model, where each lattice unit integrates a single-mode resonator that interacts with a two-level system (TLS), featuring direct coupling between adjacent TLSs. This configuration enables the coherent propagation of polaritons, spin waves, and photons, depending on the interplay between light-matter coupling and qubit-qubit interactions. Employing the time-evolving block decimation (TEBD) algorithm, we simulate the dynamics of various excitation configurations and analyze their transport characteristics using local observables. Our analysis reveals the importance of matching impedance and resonance conditions via system parameters for the propagation of different types of excitations or swapping the nature of excitations along the hybrid lattice. These findings offer insights into designing controllable quantum links and single-excitation swaps in low-dimensional quantum systems.

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