Dissipative Topological Phase Transition with Strong System-Environment Coupling

• URL: http://arxiv.org/abs/2103.16445v2
• Date: Sat, 18 Dec 2021 13:18:57 GMT
• Title: Dissipative Topological Phase Transition with Strong System-Environment Coupling
• Authors: Wei Nie, Mauro Antezza, Yu-xi Liu, Franco Nori
• Abstract summary: We study a topological emitter array coupled to an electromagnetic environment. The photon-emitter coupling produces nonlocal interactions between emitters. Our work shows the potential to manipulate topological quantum matter with electromagnetic environments.
• Score: 1.5992556036177072
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: A primary motivation for studying topological matter regards the protection of topological order from its environment. In this work, we study a topological emitter array coupled to an electromagnetic environment. The photon-emitter coupling produces nonlocal interactions between emitters. Using periodic boundary conditions for all ranges of environment-induced interactions, the chiral symmetry inherent to the emitter array is preserved. This chiral symmetry protects the Hamiltonian, and induces parity in the Lindblad operator. A topological phase transition occurs at a critical photon-emitter coupling related to the energy spectrum width of the emitter array. Interestingly, the critical point nontrivially changes the dissipation rates of edge states, yielding a dissipative topological phase transition. In the protected topological phase, edge states suffer from environment-induced dissipation for weak photon-emitter coupling. However, strong coupling leads to robust dissipationless edge states with a window at the emitter spacing. Our work shows the potential to manipulate topological quantum matter with electromagnetic environments.

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)
• Entanglement and Topology in Su-Schrieffer-Heeger Cavity Quantum Electrodynamics [0.0]
  We characterize entanglement, energy spectrum and correlation functions of the topological Su-Schrieffer-Heeger chain interacting with an optical cavity mode. We establish an area law scaling for the ground state entanglement entropy, despite long-range correlations induced by light-matter interactions. This work provides a framework for characterizing novel equilibrium phenomena in topological cavity materials.
  arXiv  Detail & Related papers  (2023-08-16T18:00:00Z)
• Dynamical detection of mean-field topological phases in an interacting Chern insulator [11.848843951626527]
  We propose a scheme based on quench dynamics to detect the mean-field topological phase diagram of an insulator. We find two characteristic times $t_s$ and $t_c$ which capture the emergence of dynamical self-consistent particle number density. The number of mean-field topological phase is determined by the spin polarizations of four Dirac points at the time $t_s$.
  arXiv  Detail & Related papers  (2022-06-22T12:37:15Z)
• Formation of robust bound states of interacting microwave photons [148.37607455646454]
  One of the hallmarks of interacting systems is the formation of multi-particle bound states. We develop a high fidelity parameterizable fSim gate that implements the periodic quantum circuit of the spin-1/2 XXZ model. By placing microwave photons in adjacent qubit sites, we study the propagation of these excitations and observe their bound nature for up to 5 photons.
  arXiv  Detail & Related papers  (2022-06-10T17:52:29Z)
• Tuning long-range fermion-mediated interactions in cold-atom quantum simulators [68.8204255655161]
  Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
  arXiv  Detail & Related papers  (2022-03-31T13:32:12Z)
• 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)
• Photon-mediated interactions near a Dirac photonic crystal slab [68.8204255655161]
  We develop a theory of dipole radiation near photonic Dirac points in realistic structures. We find positions where the nature of the collective interactions change from being coherent to dissipative ones. Our results significantly improve the knowledge of Dirac light-matter interfaces.
  arXiv  Detail & Related papers  (2021-07-01T14:21:49Z)
• Dynamical phase transitions in quantum spin models with antiferromagnetic long-range interactions [0.0]
  Anomalous cusps in the return rate are ubiquitous at small quenches within the ordered phase in the case of ferromagnetic long-range interactions. For quenches across the quantum critical point, textitregular cusps appear in the return rate and connect to the local order parameter changing sign.
  arXiv  Detail & Related papers  (2021-06-09T18:00:01Z)
• Qubit-photon bound states in topological waveguides with long-range hoppings [62.997667081978825]
  Quantum emitters interacting with photonic band-gap materials lead to the appearance of qubit-photon bound states. We study the features of the qubit-photon bound states when the emitters couple to the bulk modes in the different phases. We consider the coupling of emitters to the edge modes appearing in the different topological phases.
  arXiv  Detail & Related papers  (2021-05-26T10:57:21Z)
• Spin Entanglement and Magnetic Competition via Long-range Interactions in Spinor Quantum Optical Lattices [62.997667081978825]
  We study the effects of cavity mediated long range magnetic interactions and optical lattices in ultracold matter. We find that global interactions modify the underlying magnetic character of the system while introducing competition scenarios. These allow new alternatives toward the design of robust mechanisms for quantum information purposes.
  arXiv  Detail & Related papers  (2020-11-16T08:03:44Z)
• Topological transitions induced by cavity-mediated interactions in photonic valley-Hall metasurfaces [0.0]
  Topological phases of light exhibit unique properties beyond the realm of conventional photonics. We propose a mechanism to induce topological transitions via accidental Dirac points in metasurfaces composed of interacting dipole emitters/antennas. This mechanism could have important implications for other topological phases such as photonic higher-order topological insulators.
  arXiv  Detail & Related papers  (2020-10-04T17:25:49Z)

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.