Two-photon edge states in photonic topological insulators: topological protection versus degree of entanglement

• URL: http://arxiv.org/abs/2011.10461v1
• Date: Fri, 20 Nov 2020 15:51:28 GMT
• Title: Two-photon edge states in photonic topological insulators: topological protection versus degree of entanglement
• Authors: Konrad Tschernig, Alvaro Jimenez-Galan, Demetrios N. Christodoulides, Misha Ivanov, Kurt Busch, Miguel A. Bandres, and Armando Perez-Leija
• Abstract summary: Topological insulators combine insulating properties in the bulk with scattering-free transport along edges. We identify physical mechanisms which contribute to the vulnerability of entangled states in topological photonic lattices.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Topological insulators combine insulating properties in the bulk with scattering-free transport along edges, supporting dissipationless unidirectional energy and information flow even in the presence of defects and disorder. The feasibility of engineering quantum Hamiltonians with photonic tools, combined with the availability of entangled photons, raises the intriguing possibility of employing topologically protected entangled states in optical quantum computing and information processing. However, while two-photon states built as a product of two topologically protected single-photon states inherit full protection from their single-photon "parents", high degree of non-separability may lead to rapid deterioration of the two-photon states after propagation through disorder. We identify physical mechanisms which contribute to the vulnerability of entangled states in topological photonic lattices and present clear guidelines for maximizing entanglement without sacrificing topological protection.

Related papers

• Long-range interactions in Weyl dense atomic arrays protected from dissipation and disorder [41.94295877935867]
  Long-range interactions are a key resource in many quantum phenomena and technologies. We show how to design the polaritonic bands of these atomic metamaterials to feature a pair of frequency-isolated Weyl points. These Weyl excitations can thus mediate interactions that are simultaneously long-range, due to their gapless nature; robust, due to the topological protection of Weyl points; and decoherence-free, due to their subradiant character.
  arXiv  Detail & Related papers  (2024-06-18T20:15:16Z)
• Limits for coherent optical control of quantum emitters in layered materials [49.596352607801784]
  coherent control of a two-level system is among the most essential challenges in modern quantum optics. We use a mechanically isolated quantum emitter in hexagonal boron nitride to explore the individual mechanisms which affect the coherence of an optical transition under resonant drive. New insights on the underlying physical decoherence mechanisms reveals a limit in temperature until which coherent driving of the system is possible.
  arXiv  Detail & Related papers  (2023-12-18T10:37:06Z)
• Enhancement of photon blockade via topological edge states [4.26492661272223]
  We theoretically put forth a quantum Su-Schrieffer-Heeger-type chain designed to greatly enhance single-photon blockade (single-PB) effect with topological protection. The PB effect is robust to local perturbations in cavity-qubit coupling and qubit frequency, benefitting from topological protection.
  arXiv  Detail & Related papers  (2023-11-19T21:53:01Z)
• Enhanced quantum emission from a topological Floquet resonance [0.9737125708599035]
  Entanglement is a valuable resource in quantum information technologies. We present a development in entangled photon pair generation achieved through a non-magnetic and anomalous Floquet insulator.
  arXiv  Detail & Related papers  (2023-08-22T13:59:20Z)
• Dissipative stabilization of maximal entanglement between non-identical emitters via two-photon excitation [49.1574468325115]
  Two non-identical quantum emitters, when placed within a cavity and coherently excited at the two-photon resonance, can reach stationary states of nearly maximal entanglement. We show that this mechanism is merely one among a complex family of phenomena that can generate both stationary and metastable entanglement when driving the emitters at the two-photon resonance.
  arXiv  Detail & Related papers  (2023-06-09T16:49:55Z)
• Probing and harnessing photonic Fermi arc surface states using light-matter interactions [62.997667081978825]
  We show how to image the Fermi arcs by studying the spontaneous decay of one or many emitters coupled to the system's border. We demonstrate that the Fermi arc surface states can act as a robust quantum link.
  arXiv  Detail & Related papers  (2022-10-17T13:17:55Z)
• Topological multi-mode waveguide QED [49.1574468325115]
  We show how to take advantage of topologically protected propagating modes by interfacing them with quantum emitters. Such capabilities pave the way for generating quantum gates among topologically protected photons as well as generating more complex entangled states of light in topological channels.
  arXiv  Detail & Related papers  (2022-07-05T14:48:50Z)
• Review on coherent quantum emitters in hexagonal boron nitride [91.3755431537592]
  I discuss the state-of-the-art of defect centers in hexagonal boron nitride with a focus on optically coherent defect centers. The spectral transition linewidth remains unusually narrow even at room temperature. The field is put into a broad perspective with impact on quantum technology such as quantum optics, quantum photonics as well as spin optomechanics.
  arXiv  Detail & Related papers  (2022-01-31T12:49:43Z)
• Topologically Protecting Squeezed Light on a Photonic Chip [58.71663911863411]
  Integrated photonics offers an elegant way to increase the nonlinearity by confining light strictly inside the waveguide. We experimentally demonstrate the topologically protected nonlinear process of spontaneous four-wave mixing enabling the generation of squeezed light on a silica chip.
  arXiv  Detail & Related papers  (2021-06-14T13:39:46Z)
• Quadrature protection of squeezed states in a one-dimensional photonic topological insulator [0.0]
  We study the propagation of squeezed states in a topological one-dimensional waveguide array. We find that propagation of squeezed light in a topologically protected state robustly preserves the phase of the squeezed quadrature as the system evolves.
  arXiv  Detail & Related papers  (2021-06-02T00:33:09Z)
• Protecting Quantum Superposition and Entanglement with Photonic Higher-Order Topological Crystalline Insulator [10.847084154651236]
  We present an experimental observation of photonic higher-order topological crystalline insulator and its topological protection to quantum superposition and entanglement in a two-dimensional lattice. The single-photon dynamics and the protected entanglement reveal an intrinsic topological protection mechanism isolating multi-partite quantum states from diffusion-induced decoherence.
  arXiv  Detail & Related papers  (2020-06-14T18:03:28Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.