Probing and harnessing photonic Fermi arc surface states using light-matter interactions

Abstract

Fermi arcs, i.e., surface states connecting topologically-distinct Weyl points, represent a paradigmatic manifestation of the topological aspects of Weyl physics. Here, we investigate a light-matter interface based on the photonic counterpart of these states and we prove that it can lead to phenomena with no analogue in other setups. First, we show how to image the Fermi arcs by studying the spontaneous decay of one or many emitters coupled to the system's border. Second, we demonstrate that the Fermi arc surface states can act as a robust quantum link. To do that we exploit the negative refraction experienced by these modes at the hinges of the system. Thanks to this mechanism a circulatory photonic current is created which, depending on the occurrence of revivals, yields two distinct regimes. In the absence of revivals, the surface states behave as a dissipative chiral quantum channel enabling, e.g., perfect quantum state transfer. In the presence of revivals, an effective off-resonant cavity is induced, which leads to coherent emitter couplings that can entangle them maximally. In addition to their fundamental interest, our findings evidence the potential offered by the photonic Fermi arc light-matter interfaces for the design of more robust quantum technologies.

19 pages, 8 figures

References in corpus (17)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• Chiral Quantum Optics
• Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase
• Cold atoms in cavity-generated dynamical optical potentials
• Entanglement of two qubits mediated by one-dimensional plasmonic waveguides
• Protecting entanglement via the quantum Zeno effect
• Quantum Optics of Chiral Spin Networks
• Quantum Spin Dimers from Chiral Dissipation in Cold-Atom Chains
• Interference pattern and visibility of a Mott insulator
• Topological and geometrical aspects of band theory
• Engineering and harnessing giant atoms in high-dimensional baths: a cold atoms' implementation
• Topological Weyl Semi-metal from a Lattice Model
• Topological multi-mode waveguide QED
• Light-matter interactions near photonic Weyl points
• Energy density as a probe of band representations in photonic crystals
• Long-lived qubit entanglement by surface plasmon polaritons in a Weyl semimetal

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• Emergence of Spinon Fermi Arcs in the Weyl-Mott Metal-Insulator Transition
• Long-range interactions in Weyl dense atomic arrays protected from dissipation and disorder
• Controlling directional propagation in driven-dissipative 2D photonic lattices