Taming plasmonic nanocavities for subradiant entanglement

• URL: http://arxiv.org/abs/2410.04067v1
• Date: Sat, 5 Oct 2024 07:37:46 GMT
• Title: Taming plasmonic nanocavities for subradiant entanglement
• Authors: Angus Crookes, Ben Yuen, Angela Demetriadou,
• Abstract summary: We show how entanglement emerges in plasmonic nanocavities, which are inherently multi-mode. We find that, in general, these conditions are broken due to coupling with multiple plasmonic modes of different parity. Our results open exciting prospects for leveraging simple plasmonic setups in ambient conditions for applications in quantum communication, sensing and rapid quantum memories.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recent rapid advances in quantum nanoplasmonics offer the potential for accessing quantum phenomena at room temperature. Despite this, entangled states have not yet been realised, and remain an outstanding challenge. In this work, we demonstrate how entanglement emerges in plasmonic nanocavities, which are inherently multi-mode, and demonstrate the conditions necessary for entanglement to persist. We find that, in general, these conditions are broken due to coupling with multiple plasmonic modes of different parity. We address this challenge with a new nanocavity design that supports high selective coupling to a single mode, enabling the robust generation of subradiant entanglement in nanoplasmonics. Our results open exciting prospects for leveraging simple plasmonic setups in ambient conditions for applications in quantum communication, sensing and rapid quantum memories.

Related papers

• Persistent currents in ultracold gases [0.0]
  Persistent currents flowing in spatially closed tracks define one of the most iconic concepts in mesoscopic physics. They have been studied in solid-state platforms such as superfluids, superconductors and metals. We discuss how persistent currents can form the basis of new technological applications like matter-wave gyroscopes and interferometers.
  arXiv  Detail & Related papers  (2024-10-22T18:00:03Z)
• Near-field Strong Coupling and Entanglement of Quantum Emitters for Room-temperature Quantum Technologies [0.0]
  We highlight a number of recent studies that reveal the especially compelling potential of nanoplasmonic cavity quantum electrodynamics. Our perspective encompasses innovative proposals for quantum plasmonic biosensing, driving ultrafast single-photon emission and achieving near-field multipartite entanglement. We conclude with an outlook emphasizing how the bespoke characteristics and functionalities of plasmonic devices are shaping contemporary research directives in ultrafast and room-temperature quantum nanotechnologies.
  arXiv  Detail & Related papers  (2024-06-21T14:18:57Z)
• Subradiant entanglement in plasmonic nanocavities [0.0]
  Plasmonic nanocavities form sub-radiant entangled states between two or more quantum emitters. This work paves the way towards engineering quantum entangled states in ambient conditions with plasmonic nanocavities.
  arXiv  Detail & Related papers  (2023-10-10T09:36:14Z)
• Quantum emulation of the transient dynamics in the multistate Landau-Zener model [50.591267188664666]
  We study the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity. Our experiments pave the way for more complex simulations with qubits coupled to an engineered bosonic mode spectrum.
  arXiv  Detail & Related papers  (2022-11-26T15:04:11Z)
• 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)
• 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)
• Spin many-body phases in standard and topological waveguide QED simulators [68.8204255655161]
  We study the many-body behaviour of quantum spin models using waveguide QED setups. We find novel many-body phases different from the ones obtained in other platforms.
  arXiv  Detail & Related papers  (2021-06-22T09:44:20Z)
• Cavity QED with Quantum Gases: New Paradigms in Many-Body Physics [0.0]
  We review the recent developments and the current status in the field of quantum-gas cavity QED. Composite quantum-gas--cavity systems offer the opportunity to implement, simulate, and experimentally test fundamental solid-state Hamiltonians.
  arXiv  Detail & Related papers  (2021-02-08T19:00:03Z)
• 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)
• Random singlet phase of cold atoms coupled to a photonic crystal waveguide [0.0]
  Systems consisting of cold atoms trapped near photonic crystal waveguides have recently emerged as an exciting platform for quantum atom-light interfaces. We show that this regime in fact enables interesting many-body quantum phenomena, which are typically associated with short-range disordered systems.
  arXiv  Detail & Related papers  (2020-05-24T14:40:33Z)
• Quantum Hall phase emerging in an array of atoms interacting with photons [101.18253437732933]
  Topological quantum phases underpin many concepts of modern physics. Here, we reveal that the quantum Hall phase with topological edge states, spectral Landau levels and Hofstadter butterfly can emerge in a simple quantum system. Such systems, arrays of two-level atoms (qubits) coupled to light being described by the classical Dicke model, have recently been realized in experiments with cold atoms and superconducting qubits.
  arXiv  Detail & Related papers  (2020-03-18T14:56:39Z)

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.