Second-order correlation and squeezing of photons in cavities with ultrastrong magnon-photon interactions

• URL: http://arxiv.org/abs/2411.18512v2
• Date: Thu, 28 Nov 2024 08:17:01 GMT
• Title: Second-order correlation and squeezing of photons in cavities with ultrastrong magnon-photon interactions
• Authors: Vemund Falch, Arne Brataas, Alireza Qaiumzadeh,
• Abstract summary: This study focuses on ferromagnetic and antiferromagnetic cavities within the ultra-strong coupling regime. By deriving exact integral solutions for the second-order correlation function, we demonstrate that counter-rotating magnon-photon interactions induce quadrature squeezing in the cavity mode. tuning the anisotropic magnon-cavity couplings enhance the squeezing effect by changing the level repulsion of the magnon-cavity photon hybrid mode.
• Score: 0.0
• License:
• Abstract: We investigate the second-order photon correlation function in cavity-magnon systems, focusing on ferromagnetic and antiferromagnetic cavities within the ultra-strong coupling regime, and extending beyond the rotating-wave approximation. By deriving exact integral solutions for the second-order correlation function, we demonstrate that counter-rotating magnon-photon interactions induce quadrature squeezing in the cavity mode. Furthermore, we show that tuning the anisotropic magnon-cavity couplings enhance the squeezing effect by changing the level repulsion of the magnon-cavity photon hybrid mode without increasing cavity photon occupation number. Our study reveals distinct quantum correlation behaviors in ferromagnetic and antiferromagnetic cavities: For ferromagnetic cavities, we show that squeezing increases with coupling strength asymmetry, whereas in antiferromagnetic case, magnon modes with opposite chirality suppress quantum effects and imposes a lower bound on correlation functions. These findings provide a pathway to optimize photon blockade and quantum information processing in magnon-cavity systems in the ultrastrong coupling limit.

Related papers

• Strong photon coupling to high-frequency antiferromagnetic magnons via topological surface states [0.0]
  We show strong coupling between antiferromagnetic magnons and microwave cavity photons at both high and externally controllable magnon frequencies. This result may advance the utilization of high-frequency cavity magn frequencies and enable its incorporation into quantum information technology.
  arXiv  Detail & Related papers  (2024-10-18T18:00:08Z)
• Demonstration of Lossy Linear Transformations and Two-Photon Interference on a Photonic Chip [78.1768579844556]
  We show that engineered loss, using an auxiliary waveguide, allows one to invert the spatial statistics from bunching to antibunching. We study the photon statistics within the loss-emulating channel and observe photon coincidences, which may provide insights into the design of quantum photonic integrated chips.
  arXiv  Detail & Related papers  (2024-04-09T06:45:46Z)
• Entropy production rate and correlations of cavity magnomechanical system [0.44998333629984877]
  We present the irreversibility generated by a stationary cavity magnomechanical system composed of a yttrium iron garnet (YIG) sphere with a diameter of a few hundred micrometers inside a microwave cavity. We find that the behavior of the entropy flow between the cavity photon mode and the phonon mode is determined by the magnon-photon coupling and the cavity photon dissipation rate. Our results demonstrate the possibility of exploring irreversibility in driven magnon-based hybrid quantum systems and open a promising route for quantum thermal applications.
  arXiv  Detail & Related papers  (2024-01-30T10:00:44Z)
• Macroscopic entanglement between ferrimagnetic magnons and atoms via crossed optical cavity [5.151140055918105]
  Two-dimensional opto-magnomechanical (OMM) system includes two optical cavity modes, a magnon mode, a phonon mode, and a collection of two-level atoms. In this study, we demonstrate the methodology for generating stationary entanglement between two-level atoms and magnons.
  arXiv  Detail & Related papers  (2023-12-19T05:26:03Z)
• Magnetic-field-induced cavity protection for intersubband polaritons [52.77024349608834]
  We analyse the effect of a strong perpendicular magnetic field on an intersubband transition in a disordered doped quantum well strongly coupled to an optical cavity. The magnetic field changes the lineshape of the intersubband optical transition due to the roughness of the interface of the quantum well from a Lorentzian to a Gaussian one.
  arXiv  Detail & Related papers  (2022-10-14T18:00:03Z)
• Measuring the magnon-photon coupling in shaped ferromagnets: tuning of the resonance frequency [50.591267188664666]
  cavity photons and ferromagnetic spins excitations can exchange information coherently in hybrid architectures. Speed enhancement is usually achieved by optimizing the geometry of the electromagnetic cavity. We show that the geometry of the ferromagnet plays also an important role, by setting the fundamental frequency of the magnonic resonator.
  arXiv  Detail & Related papers  (2022-07-08T11:28:31Z)
• Optomagnonics in dispersive media: magnon-photon coupling enhancement at the epsilon-near-zero frequency [0.0]
  Single-magnon photon optomagnonic coupling can be comparable to the uniform magnon's frequency for small magnetic volumes. Non-linear energy spectrum intrinsic to this coupling regime regime can be probed via the characteristic multiple magnon sidebands in the photon power spectrum.
  arXiv  Detail & Related papers  (2021-10-06T18:00:22Z)
• Driven-dissipative Quantum Dynamics in Cavity Magnon-Polariton System [4.22183654884537]
  The dynamics of arbitrary-order quantum correlations in a cavity magnon-polariton system are investigated. Results demonstrate the rich higher-order quantum dynamics induced by magnetic light-matter interaction.
  arXiv  Detail & Related papers  (2021-07-22T03:42:59Z)
• Two-photon resonance fluorescence of two interacting non-identical quantum emitters [77.34726150561087]
  We study a system of two interacting, non-indentical quantum emitters driven by a coherent field. We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters. This can be exploited for applications such as superresolution imaging of point-like sources.
  arXiv  Detail & Related papers  (2021-06-04T16:13:01Z)
• Photon Condensation and Enhanced Magnetism in Cavity QED [68.8204255655161]
  A system of magnetic molecules coupled to microwave cavities undergoes the equilibrium superradiant phase transition. The effect of the coupling is first illustrated by the vacuum-induced ferromagnetic order in a quantum Ising model. A transmission experiment is shown to resolve the transition, measuring the quantum electrodynamical control of magnetism.
  arXiv  Detail & Related papers  (2020-11-07T11:18:24Z)
• Quantum Borrmann effect for dissipation-immune photon-photon correlations [137.6408511310322]
  We study theoretically the second-order correlation function $g(2)(t)$ for photons transmitted through a periodic Bragg-spaced array of superconducting qubits, coupled to a waveguide. We demonstrate that photon bunching and anti-bunching persist much longer than both radiative and non-radiative lifetimes of a single qubit.
  arXiv  Detail & Related papers  (2020-09-29T14:37:04Z)

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.