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

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

URL: http://arxiv.org/abs/2411.18512v3
Date: Mon, 31 Mar 2025 07:41:18 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 ultrastrong coupling regime.<n>We show that counter-rotating magnon-photon interactions induce quadrature squeezing in the cavity mode.<n> tuning the anisotropic magnon-cavity couplings enhances the squeezing effect.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: We investigate the second-order photon correlation function in cavity-magnon systems, focusing on ferromagnetic and antiferromagnetic cavities within the ultrastrong 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 enhances the squeezing effect by changing the level repulsion of the magnon-cavity photon hybrid mode without increasing the 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 the antiferromagnetic case, magnon modes with opposite chirality suppress quantum effects and impose a lower bound on correlation functions. These findings provide a pathway to optimize photon blockade for quantum information technology in magnon-cavity systems in the ultrastrong coupling limit.

Related papers

Harnessing Chiral Spin States in Molecular Nanomagnets for Quantum Technologies [44.1973928137492]
We show that chiral qubits naturally suppress always-on interactions that can not be switched off in weakly coupled qubits. Our findings establish spin chirality engineering as a promising strategy for mitigating always-on interaction in entangling two chiral qubits in molecular quantum technologies.
arXiv Detail & Related papers (2025-01-21T08:23:12Z)
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)
Photon correlation time-asymmetry and dynamical coherence in multichromophoric systems [44.99833362998488]
We show that time-asymmetries in the cross-correlations of photons corresponding to different polarizations can be exploited to probe quantum coherent transport mechanisms and steady-state coherence properties. Our results put forward photon correlation asymmetry as a promising approach to investigate coherent contributions to excited-stated dynamics in molecular aggregates and other many-site quantum emitters.
arXiv Detail & Related papers (2024-04-24T21:06:01Z)
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)
Strong coupling between a single photon and a photon pair [43.14346227009377]
We report an experimental observation of the strong coupling between a single photon and a photon pair in an ultrastrongly-coupled circuit-QED system. Results represent a key step towards a new regime of quantum nonlinear optics.
arXiv Detail & Related papers (2024-01-05T10:23:14Z)
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)
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)
Exciton-photon complexes and dynamics in the concurrent strong-weak coupling regime of singular site-controlled cavity quantum electrodynamics [13.810406780342314]
We investigate the exciton complexes photoluminescence, dynamics and photon statistics in the concurrent strong weak coupling regime. We demonstrate the strong and weak coupling can coexist dynamically, as a form of intermediate regime mediated by phonon scattering. This study suggests our device has potential for new and subtle cavity quantum electrodynamical phenomena, cavity enhanced indistinguishable single photon generation, and cluster state generation via the exciton-photon complexes for quantum networks.
arXiv Detail & Related papers (2021-07-14T07:21:57Z)
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.