Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:2610.09904

Kerr-Filtered Hybrid States from Double-Squeezed Tripartite Interactions

Jing Tang, Yuangang Deng

quant-phSubmitted Oct 7, 2026• Announced Oct 8, 2026• 0 citations
arXivHTMLPDF

Abstract

Multipartite interactions provide a unique route to generate hybrid quantum states, yet their intrinsically weak nonlinear coupling limits the controllable manipulation of the resulting correlations. Here we show that cooperative double squeezing and cavity Kerr nonlinearity together enable controllable engineering of Kerr-filtered hybrid states in a tripartite spin-photon-phonon system. Double squeezing exponentially enhances the spin-mediated photon-phonon pair-generation channel, whereas the Kerr interaction selectively reshapes the photonic component while maintaining the underlying tripartite conversion process. This mechanism reconstructs the composition of the hybrid excitation and gives rise to a fourfold phase-space manifold associated with spontaneous $Z_{2}^{(a)}\times Z_{2}^{(b)}$ parity breaking. Our results reveal a strategy for engineering hybrid quantum states by combining interaction amplification with mode-selective nonlinear filtering.

Comments
11 pages, 6 figures

Related papers

Quantum-state engineering using enhanced tripartite interactions in atom–photon–phonon hybrid systems

Yaowu Guo, Jiaqiang Zhao, Lianzhen Cao +2 more

Abstract We introduce a hybrid cavity optomechanical model capable of generating significant genuine tripartite interactions and entanglement among coherent degrees of freedom. However, realizing and controlling such tripartite interactions and their entanglement pose crucial challenges that remain largely unexplored. In this work, we predict a tripartite coupling mechanism within a hybrid quantum system consisting of a vibrating mechanical oscillator, a two-level atom and a single-frequency cavity field. We specifically propose a mechanism for tripartite and cross-Kerr nonlinear coupling through displacement and squeezing transformations. By adjusting the optical amplitude of the pump light, we can effectively enhance these nonlinear couplings, facilitating the manipulation of entangled and squeezed states. The resulting tripartite genuine entanglement exhibits distinct evolutionary characteristics. Notably, when the pump light amplitude is large, the tripartite entanglement persists for longer time. Additionally, the phonon displays characteristics of both cooling and squeezing. Our study presents a pathway for exploring and exploiting controllable multipartite entanglement, as well as achieving phonon cooling and squeezing with the assistance of a mesoscopic harmonic oscillator. This work underscores the innovative potential of our model in advancing the field of optomechanics and quantum entanglement.

Chinese Physics B•Dec 4, 2024•1 citation

Exponentially Enhanced Tripartite Coupling in Quantum Nonlinear Magnonics

Chen, Xue-Chun, Zijie Wang, Zheng, Sheng-Bo +2 more

Strong and controllable tripartite interactions play a pivotal role in quantum information and nonlinear quantum optics, yet challenging to realize. In this work, we propose a hybrid system consisting of a nitrogen-vacancy (NV) center coupled to Kerr magnons (magnons with Kerr nonlinearity) in two yttrium-iron-garnet spheres. By adiabatically eliminating the ground state of the NV qutrit in the dispersive regime, an effective tripartite interaction among magnons and an NV qubit encoded in its excited states is obtained. In the strong driving limit, Kerr magnons can be linearized and give rise to degenerate parametric amplification for squeezing magnons. As a result, both the tripartite interaction and cooperativity are exponentially enhanced twice, which is about $\exp(ξ)$ times than schemes only involving single-squeezing. Hence, our proposal is more experimentally feasible because modest squeezing parameter is sufficient. With this amplified tripartite coupling strength, the system dynamics are greatly accelerated, leading to fast generation of tripartite entanglement. In addition, noise-resilient perfect magnon blockade can be achieved, well predicted by both the analytical approach and numerical simulation with quantum master equation. Our results suggest that the NV center represents a promising interface for engineering many-body interactions in quantum magnonics, offering a versatile platform for exploring fundamental quantum phenomena such as entanglement and correlations.

arXiv:2509.01884•Sep 2, 2025•0 citations

Interference-Controlled Nonclassical Photon Emission via Cavity-Mediated Spin Exchange

Jing Tang, Yuangang Deng

Abstract The generation of nonclassical light with strong photon antibunching and appreciable brightness remains an important goal in quantum technologies. Here, we demonstrate that cavity-mediated spin-exchange interactions provide a route to overcome this constraint by amplifying spectral anharmonicity. In a two-emitter cavity-QED system with a controllable relative phase φ , the resulting interference-interaction mechanism reshapes the dressed-state manifold and enables switching between distinct quantum emission regimes. For φ = 0, constructive interference yields highquality single-photon emission with near-perfect antibunching, suppressing g 1 (2) (0) by more than three orders of magnitude while maintaining a substantial intracavity photon population. Conversely, for φ = π , destructive interference suppresses direct single-photon excitation and selectively enhances two-photon excitation, producing signatures of correlated two-photon emission with appreciable intracavity photon populations and suppressed higher-order excitations. Our work establishes interference-engineered interactions as a mechanism for the controllable selection of single-photon and photon-pair emission, opening new opportunities for programmable nonclassical light sources and quantum photonic applications.

Chinese Physics Letters•Oct 30, 2026•0 citations

Photon–magnon bundle emission via enhanced photon–magnon–atom tripartite interaction

Ziyi Wang, Wenxing Shi, Deyi Kong +2 more

Multipartite coherent interactions among distinct quantum systems are essential for quantum information and simulation but typically suffer from weak coupling. Here, we propose a scheme to realize photon-magnon-atom tripartite interactions and enhance their coupling strength via quantum squeezing. By applying a parametric drive to the microwave cavity and incorporating magnon Kerr nonlinearity, we induce squeezing of both photons and magnons, which boosts the effective coupling. Remarkably, strongly correlated photon-magnon bundle emission can be realized even under weak driving and weak intrinsic coupling conditions, with both the statistical properties and emission rate tunable via the squeezing strength. This scheme may offer promising applications in quantum information processing and quantum sensing technologies.

Optics Letters•Aug 4, 2025•2 citations

Tripartite Entanglement Generation in Atom-Coupled Dual Microresonators System

Abhishek Mandal, Joy Ghosh, Maruthi Manoj Brundavanam +1 more

In this work, we investigate the emergence and control of genuine tripartite entanglement in a hybrid cavity quantum electrodynamics architecture consisting of two linearly coupled single mode resonators, one of which interacts coherently with a two level atom. An analytical framework is developed in a weak driving regime, where the system dynamically supports a delocalized hybrid excitation shared by the two photonic modes and the atomic degree of freedom. Tripartite concurrence fill has been used to characterize and identify parameter regimes of maximal multipartite quantum correlation that can be generated in this model. Additionally, we demonstrate how dissipative rates and detuning asymmetries govern the conversion of bipartite entanglement into a genuinely tripartite state, establishing a controllable transition from localized Jaynes Cummings correlations to delocalized photonic atomic entanglement networks. These findings outline a clear route to engineering steady state multipartite quantum resources in coupled cavity QED platforms, with direct relevance to quantum networking, distributed quantum information processing, and photonic state routing in scalable quantum architectures.

quant-pharXiv:2511.16351•APS Open Science•Nov 21, 2025•0 citations

Enhanced photon-phonon cross-Kerr nonlinearity with two-photon driving

Tai-Shuang Yin, Xin-You Lü, Liang-Liang Wan +2 more

We propose a scheme to significantly enhance the cross-Kerr (CK) nonlinearity between photons and phonons in a quadratically coupled optomechanical system (OMS) with two-photon driving. This CK nonlinear enhancement originates from the parametric-driving-induced squeezing and the underlying nonlinear optomechanical interaction. Moreover, the noise of the squeezed mode can be suppressed completely by introducing a squeezed vacuum reservoir. As a result of this dramatic nonlinear enhancement and the suppressed noise, we demonstrate the feasibility of the quantum nondemolition measurement of the phonon number in an originally weak coupled OMS. In addition, the photon-phonon blockade phenomenon is also investigated in this regime, which allows for performing manipulations between photons and phonons. This Letter offers a promising route towards the potential application for the OMS in quantum information processing and quantum networks.

Optics Letters•Apr 19, 2018•25 citations
Multipartite interactions provide a unique route to generate hybrid quantum states, yet their intrinsically weak nonlinear coupling limits the controllable manipulation of the resulting correlations. Here we show that cooperative double squeezing and cavity Kerr nonlinearity together enable controllable engineering of Kerr-filtered hybrid states in a tripartite spin-photon-phonon system. Double squeezing exponentially enhances the spin-mediated photon-phonon pair-generation channel, whereas the Kerr interaction selectively reshapes the photonic component while maintaining the underlying tripartite conversion process. This mechanism reconstructs the composition of the hybrid excitation and gives rise to a fourfold phase-space manifold associated with spontaneous Z2(a)×Z2(b)Z_{2}^{(a)}\times Z_{2}^{(b)}Z2(a)​×Z2(b)​ parity breaking. Our results reveal a strategy for engineering hybrid quantum states by combining interaction amplification with mode-selective nonlinear filtering.
Abstract We introduce a hybrid cavity optomechanical model capable of generating significant genuine tripartite interactions and entanglement among coherent degrees of freedom. However, realizing and controlling such tripartite interactions and their entanglement pose crucial challenges that remain largely unexplored. In this work, we predict a tripartite coupling mechanism within a hybrid quantum system consisting of a vibrating mechanical oscillator, a two-level atom and a single-frequency cavity field. We specifically propose a mechanism for tripartite and cross-Kerr nonlinear coupling through displacement and squeezing transformations. By adjusting the optical amplitude of the pump light, we can effectively enhance these nonlinear couplings, facilitating the manipulation of entangled and squeezed states. The resulting tripartite genuine entanglement exhibits distinct evolutionary characteristics. Notably, when the pump light amplitude is large, the tripartite entanglement persists for longer time. Additionally, the phonon displays characteristics of both cooling and squeezing. Our study presents a pathway for exploring and exploiting controllable multipartite entanglement, as well as achieving phonon cooling and squeezing with the assistance of a mesoscopic harmonic oscillator. This work underscores the innovative potential of our model in advancing the field of optomechanics and quantum entanglement.
Strong and controllable tripartite interactions play a pivotal role in quantum information and nonlinear quantum optics, yet challenging to realize. In this work, we propose a hybrid system consisting of a nitrogen-vacancy (NV) center coupled to Kerr magnons (magnons with Kerr nonlinearity) in two yttrium-iron-garnet spheres. By adiabatically eliminating the ground state of the NV qutrit in the dispersive regime, an effective tripartite interaction among magnons and an NV qubit encoded in its excited states is obtained. In the strong driving limit, Kerr magnons can be linearized and give rise to degenerate parametric amplification for squeezing magnons. As a result, both the tripartite interaction and cooperativity are exponentially enhanced twice, which is about exp⁡(ξ)\exp(ξ)exp(ξ) times than schemes only involving single-squeezing. Hence, our proposal is more experimentally feasible because modest squeezing parameter is sufficient. With this amplified tripartite coupling strength, the system dynamics are greatly accelerated, leading to fast generation of tripartite entanglement. In addition, noise-resilient perfect magnon blockade can be achieved, well predicted by both the analytical approach and numerical simulation with quantum master equation. Our results suggest that the NV center represents a promising interface for engineering many-body interactions in quantum magnonics, offering a versatile platform for exploring fundamental quantum phenomena such as entanglement and correlations.
Abstract The generation of nonclassical light with strong photon antibunching and appreciable brightness remains an important goal in quantum technologies. Here, we demonstrate that cavity-mediated spin-exchange interactions provide a route to overcome this constraint by amplifying spectral anharmonicity. In a two-emitter cavity-QED system with a controllable relative phase φ , the resulting interference-interaction mechanism reshapes the dressed-state manifold and enables switching between distinct quantum emission regimes. For φ = 0, constructive interference yields highquality single-photon emission with near-perfect antibunching, suppressing g 1 (2) (0) by more than three orders of magnitude while maintaining a substantial intracavity photon population. Conversely, for φ = π , destructive interference suppresses direct single-photon excitation and selectively enhances two-photon excitation, producing signatures of correlated two-photon emission with appreciable intracavity photon populations and suppressed higher-order excitations. Our work establishes interference-engineered interactions as a mechanism for the controllable selection of single-photon and photon-pair emission, opening new opportunities for programmable nonclassical light sources and quantum photonic applications.
Multipartite coherent interactions among distinct quantum systems are essential for quantum information and simulation but typically suffer from weak coupling. Here, we propose a scheme to realize photon-magnon-atom tripartite interactions and enhance their coupling strength via quantum squeezing. By applying a parametric drive to the microwave cavity and incorporating magnon Kerr nonlinearity, we induce squeezing of both photons and magnons, which boosts the effective coupling. Remarkably, strongly correlated photon-magnon bundle emission can be realized even under weak driving and weak intrinsic coupling conditions, with both the statistical properties and emission rate tunable via the squeezing strength. This scheme may offer promising applications in quantum information processing and quantum sensing technologies.
In this work, we investigate the emergence and control of genuine tripartite entanglement in a hybrid cavity quantum electrodynamics architecture consisting of two linearly coupled single mode resonators, one of which interacts coherently with a two level atom. An analytical framework is developed in a weak driving regime, where the system dynamically supports a delocalized hybrid excitation shared by the two photonic modes and the atomic degree of freedom. Tripartite concurrence fill has been used to characterize and identify parameter regimes of maximal multipartite quantum correlation that can be generated in this model. Additionally, we demonstrate how dissipative rates and detuning asymmetries govern the conversion of bipartite entanglement into a genuinely tripartite state, establishing a controllable transition from localized Jaynes Cummings correlations to delocalized photonic atomic entanglement networks. These findings outline a clear route to engineering steady state multipartite quantum resources in coupled cavity QED platforms, with direct relevance to quantum networking, distributed quantum information processing, and photonic state routing in scalable quantum architectures.
We propose a scheme to significantly enhance the cross-Kerr (CK) nonlinearity between photons and phonons in a quadratically coupled optomechanical system (OMS) with two-photon driving. This CK nonlinear enhancement originates from the parametric-driving-induced squeezing and the underlying nonlinear optomechanical interaction. Moreover, the noise of the squeezed mode can be suppressed completely by introducing a squeezed vacuum reservoir. As a result of this dramatic nonlinear enhancement and the suppressed noise, we demonstrate the feasibility of the quantum nondemolition measurement of the phonon number in an originally weak coupled OMS. In addition, the photon-phonon blockade phenomenon is also investigated in this regime, which allows for performing manipulations between photons and phonons. This Letter offers a promising route towards the potential application for the OMS in quantum information processing and quantum networks.