Robust entanglement with 3D nonreciprocal photonic topological insulators

Abstract

We investigate spontaneous and pumped entanglement of two level systems in the vicinity of a photonic topological insulator interface, which supports a nonreciprocal (unidirectional), scattering-immune and topologically-protected surface plasmon polariton in the bandgap of the bulk material. To this end, we derive a master equation for qubit interactions in a general three-dimensional, nonreciprocal, inhomogeneous and lossy environment. The environment is represented exactly, via the photonic Green function. The resulting entanglement is shown to be extremely robust to defects occurring in the material system, such that strong entanglement is maintained even if the interface exhibits electrically-large and geometrically sharp discontinuities. Alternatively, depending on the initial excitation state, using a non-reciprocal environment allows two qubits to remain unentangled even for very close spacing. The topological nature of the material is manifest in the insensitivity of the entanglement to variations in the material parameters that preserve the gap Chern number. Our formulation and results should be useful for both fundamental investigations of quantum dynamics in nonreciprocal environments, and technological applications related to entanglement in two-level systems.

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• Resonance Energy Transfer and Quantum Entanglement Mediated by Epsilon-Near-Zero and Other Plasmonic Waveguide Systems
• Dissipative Topological Phase Transition with Strong System-Environment Coupling
• Spontaneous lateral atomic recoil force close to a photonic topological material
• Robust surface plasmon polaritons on gyrotropic interfaces
• Giant Interatomic Energy-Transport Amplification with Nonreciprocal Photonic Topological Insulators
• Optical torque on a two-level system near a strongly nonreciprocal medium
• Magnetic field-induced thermal emission tuning of InSb-based metamaterials in the terahertz frequency regime
• Quantum dynamics of molecular ensembles coupled with quantum light: Counter-rotating interactions as an essential component
• Inducing and controlling rotation on small objects using photonic topological materials
• The Langevin Noise Approach for Lossy Media and the Lossless Limit
• Probing and harnessing photonic Fermi arc surface states using light-matter interactions
• Rolled-up Epsilon-near-zero Waveguide reservoir for long-range qubit entanglement
• Enhancement of Quantum Excitation Transport by Photonic Nonreciprocity
• Spontaneous Symmetry Breaking of Time-Reversal-Symmetry and Time-Crystal States in Chiral Atomic Systems
• Long-lived qubit entanglement by surface plasmon polaritons in a Weyl semimetal
• Plasmonic Waveguides to Enhance Quantum Electrodynamic Phenomena at the Nanoscale
• Non-Markovian Transient Casimir-Polder force and population dynamics on excited and ground state atoms: weak and strong coupling regimes in generally non-reciprocal environments
• Entanglement mediated by DC current induced nonreciprocal graphene plasmonics
• Topologically protected long-range coherent energy transfer