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

Optical and Quantum Electronics

Kerr controlled continuous variable quantum teleportation in a driven dissipative parametric resonator

Sisay Belachew, Mohammed Kelif, Firomsa Feyissa

Published Oct 21, 2026• 0 citations
Publisher

Abstract

Abstract On this paper, we present a Kerr enhanced continuous variable quantum teleportation scheme based on a driven dissipative nondegenerate optical resonator that combines two mode parametric squeezing with intrinsic third-order Kerr nonlinearity. Right here by linearizing the quantum Langevin dynamics around the self consistent steady state intracavity fields and solving the associated continuous Lyapunov equation, we obtain the steady state covariance matrix and systematically characterize the resulting quantum correlations through logarithmic negativity, EPR variance, teleportation fidelity, and dynamical stability. With the assist of Kerr nonlinearity, parametric coupling, detuning, pump amplitude, and stability our results demonstrate that the quantum teleportation. our finding analysis the optimized stable regime supports teleportation fidelity above the classical benchmark, $F_{\mathrm{tel}}>0.5$, establishing a direct connection between engineered Kerr mediated quantum correlations and operationally useful continuous variable state transfer. These results establish a promising compact platform for tunable entanglement generation and integrated quantum communication.

DOI
10.1007/s11082-026-09203-6

Related papers

Parametric Control of Two-Mode Squeezed Light via Engineered Reservoirs and Tunable Optomechanical Interfaces

Tarekegn Tarekegn-Ossie-Hundebo

Quantum optomechanical systems enable versatile control of non-classical light. We study two-mode squeezed-light generation in a driven optomechanical cavity with parametrically amplified optical modes coupled to mechanical resonator. Coherent driving reveals a rich control landscape where parametric nonlinearity, optomechanical coupling, and reservoir interactions jointly tailor quantum correlations-including two-mode squeezing, entanglement, steering, and discord. Remarkably, mechanical oscillators not only mediate optical entanglement but also act as a squeezing resource, enabling enhancement or suppression of quantum correlations via parameter tuning. We derive steady-state second-order moments and closed-form covariance matrix expressions, quantifying entanglement via logarithmic negativity, steering via Reid criterion, and discord via von Neumann entropy, providing a comprehensive framework for optimized generation of quantum correlations in hybrid quantum systems.

London journal of physics.•Jul 28, 2026•0 citations

Continuous-variable quantum teleportation based on microring resonator entanglement

Qian Tao, Guangqiang He, J Zhou

Abstract In the field of quantum information, quantum teleportation, as a highly promising core technology, has attracted widespread attention from researchers worldwide. Quantum entanglement, a special correlation between two or more quantum systems, provides indispensable theoretical support for quantum teleportation. However, current research on quantum teleportation still faces several key challenges, including the preparation of efficient and stable entanglement sources, the high-fidelity maintenance of entangled states, and compatibility with practical communication systems. Microcavity entanglement sources, as a crucial element in quantum teleportation research, are a core component of cavity quantum electrodynamics (Cavity QED) schemes, and their performance directly affects the efficiency and reliability of the entire teleportation system. Addressing these challenges, this paper proposes a quantum teleportation scheme based on a silicon nitride microring resonator as the entanglement source. The feasibility of the scheme is analyzed theoretically and verified via numerical simulation. This scheme utilizes four-wave mixing technology to directly generate high-fidelity polarization-entangled photon pairs in the microcavity. This not only achieves miniaturization and integration of the entanglement source but also significantly improves entanglement generation efficiency through optimized microcavity design, providing a practical solution to overcome the numerical bottlenecks currently faced in quantum teleportation. Using this entanglement source as a quantum channel, a continuous-variable quantum teleportation protocol is designed: Alice performs a Bell state measurement on the unknown input state and the local entangled mode using homodyne detection, while Bob reconstructs the quantum state based on the classical communication results through conditional displacement. This research theoretically establishes the feasibility of microcavity entanglement sources for high-fidelity quantum teleportation, with numerical simulations confirming the predicted performance.

Physica Scripta•May 28, 2026•0 citations

Two-mode Gaussian entangled state generated by correlated emission laser as a resource for continuous-variable quantum teleportation

Haleema Sadia Qureshi, Fazal Ghafoor

Quantum teleportation, one of the most significant protocols in quantum information processing, allows the unembodied transfer of an unknown quantum state from one location to another distinct location. Here, we propose a scheme of continuous-variable quantum teleportation, wherein the two-mode Gaussian entangled state generated by a correlated spontaneous emission laser (CEL) system is used as a quantum resource. Initially, the two quantized cavity fields, in the form of single-mode Gaussian states characterized by the non-classicality and purity of the states, along with a strong classical field, are coupled to the gain medium of the CEL system. We consider a squeezed coherent state (SCS) for the teleportation process and calculate the time-dependent expression for its teleportation fidelity using the Wigner function formalism. In this framework, we thoroughly analyze the teleportation of the SCS, using its fidelity, for various parameters of the proposed system. We show that the amplified entanglement generated by the CEL system leads to an optimized fidelity for the teleportation of SCS.

Applied Optics•Apr 9, 2025•2 citations

Optimizing realistic continuous-variable quantum teleportation with non-Gaussian resources

Ankita, Arpita Chatterjee

In this work, we investigate the performance of non-Gaussian entangled resources in continuous-variable quantum teleportation within a realistic setting. We describe the characteristic functions of three distinct entangled resources, a two-mode squeezed vacuum state, a two-mode photon-subtracted squeezed state, and a two-mode photon-added squeezed state. We extend the theoretical analysis by Yang et al. to include the realistic experimental conditions such as photon losses, imperfect measurements which typically affect continuous-variable quantum teleportation. Our results demonstrate that even in non-ideal situations, the photon-subtracted squeezed state outperforms the other two resources in the low squeezing regime, keeping fidelity above the classical threshold that suggests the robustness of photon-subtracted squeezed state in practical teleportation applications. We further analyze the EPR correlations of these entangled resources, revealing that the photon-subtracted squeezed state exhibits stronger EPR correlations than the original two-mode squeezed vacuum state and the two-mode photon-added squeezed state. This study merges theoretical models with realistic imperfections and utilizes non-Gaussian entanglement into high-fidelity quantum teleportation.

arXiv:2503.15909•Mar 20, 2025•0 citations

Continuous-variable teleportation and entanglement distribution in quantum passive optical networks

Amir Mohammad Yaghoobianzadeh, Jawad A. Salehi

Introduction: Continuous-variable quantum teleportation and entanglement distribution are fundamental building blocks for future quantum internet infrastructures. Quantum passive optical networks (QPONs) provide a promising architecture for scalable multi-user quantum communication by exploiting the mature passive optical network infrastructure. Materials and methods: We develop a theoretical framework for continuous-variable entanglement distribution and quantum teleportation in QPONs using two-mode squeezed vacuum states propagating through splitter–combiner–loss channels. Both downlink and uplink architectures are investigated under assisted and non-assisted protocols. The performance is analyzed using covariance matrix formalism, logarithmic negativity, and teleportation fidelity, and closed-form analytical expressions are derived together with numerical evaluations. Results: The analysis demonstrates that downlink entanglement distribution consistently outperforms the uplink architecture in terms of both logarithmic negativity and teleportation fidelity except in noise-less channels. Assisted protocols further enhance the achievable performance compared with non-assisted schemes. We derive the optimum squeezing parameter for non-assisted teleportation, showing that excessive squeezing may become detrimental because of network loss and splitting. Numerical results quantify the effects of network size, transmission distance, channel excess noise, detector imperfections, and measurement-added noise on entanglement distribution and teleportation performance. Also, we have showed that the time-division multiple-access is the preferred scheduling scheme between the users. Conclusions: The proposed framework establishes fundamental performance limits for continuous-variable QPONs and identifies practical design guidelines for scalable quantum access networks. The results demonstrate the advantages of downlink entanglement distribution and assisted teleportation, providing theoretical support for the development of future multi-user quantum communication and quantum internet infrastructures.

Academia quantum.•Aug 25, 2026•1 citation

Coherent control of optomechanical entanglement and steering via dual parametric amplification

Jinhao Jia, Yingru Li, Ran Liang +1 more

We propose a coherent control scheme for engineering quantum correlations in a cavity optomechanical (COM) system consisting of a driven optical cavity with an embedded nonlinear medium and a membrane, assisted by a coherent feedback loop. The nonlinear medium and the membrane are pumped to implement optical and mechanical parametric amplifications with controllable modulation frequencies and pump amplitudes. Within the stable regime identified by Floquet analysis, the feedback-induced enhancement of optomechanical entanglement persists when the period-averaged mean-field intracavity photon number is matched, showing that the enhancement cannot be attributed simply to an increase in this quantity. A systematic comparison of the four configurations further reveals a nonadditive interplay between dual parametric amplification and coherent feedback. Varying the amplitude reflectivity of the beam splitter and the feedback loop phase enables effective control of optomechanical entanglement and directional EPR steering, including a transition from one-way to two-way steering. The combined scheme also improves the robustness of both correlations against thermal noise, providing a potential route toward robust quantum-state engineering in COM systems.

quant-pharXiv:2604.15162•Physical Review A•Apr 17, 2026•0 citations
Abstract On this paper, we present a Kerr enhanced continuous variable quantum teleportation scheme based on a driven dissipative nondegenerate optical resonator that combines two mode parametric squeezing with intrinsic third-order Kerr nonlinearity. Right here by linearizing the quantum Langevin dynamics around the self consistent steady state intracavity fields and solving the associated continuous Lyapunov equation, we obtain the steady state covariance matrix and systematically characterize the resulting quantum correlations through logarithmic negativity, EPR variance, teleportation fidelity, and dynamical stability. With the assist of Kerr nonlinearity, parametric coupling, detuning, pump amplitude, and stability our results demonstrate that the quantum teleportation. our finding analysis the optimized stable regime supports teleportation fidelity above the classical benchmark, Ftel>0.5F_{\mathrm{tel}}>0.5Ftel​>0.5, establishing a direct connection between engineered Kerr mediated quantum correlations and operationally useful continuous variable state transfer. These results establish a promising compact platform for tunable entanglement generation and integrated quantum communication.
Quantum optomechanical systems enable versatile control of non-classical light. We study two-mode squeezed-light generation in a driven optomechanical cavity with parametrically amplified optical modes coupled to mechanical resonator. Coherent driving reveals a rich control landscape where parametric nonlinearity, optomechanical coupling, and reservoir interactions jointly tailor quantum correlations-including two-mode squeezing, entanglement, steering, and discord. Remarkably, mechanical oscillators not only mediate optical entanglement but also act as a squeezing resource, enabling enhancement or suppression of quantum correlations via parameter tuning. We derive steady-state second-order moments and closed-form covariance matrix expressions, quantifying entanglement via logarithmic negativity, steering via Reid criterion, and discord via von Neumann entropy, providing a comprehensive framework for optimized generation of quantum correlations in hybrid quantum systems.
Abstract In the field of quantum information, quantum teleportation, as a highly promising core technology, has attracted widespread attention from researchers worldwide. Quantum entanglement, a special correlation between two or more quantum systems, provides indispensable theoretical support for quantum teleportation. However, current research on quantum teleportation still faces several key challenges, including the preparation of efficient and stable entanglement sources, the high-fidelity maintenance of entangled states, and compatibility with practical communication systems. Microcavity entanglement sources, as a crucial element in quantum teleportation research, are a core component of cavity quantum electrodynamics (Cavity QED) schemes, and their performance directly affects the efficiency and reliability of the entire teleportation system. Addressing these challenges, this paper proposes a quantum teleportation scheme based on a silicon nitride microring resonator as the entanglement source. The feasibility of the scheme is analyzed theoretically and verified via numerical simulation. This scheme utilizes four-wave mixing technology to directly generate high-fidelity polarization-entangled photon pairs in the microcavity. This not only achieves miniaturization and integration of the entanglement source but also significantly improves entanglement generation efficiency through optimized microcavity design, providing a practical solution to overcome the numerical bottlenecks currently faced in quantum teleportation. Using this entanglement source as a quantum channel, a continuous-variable quantum teleportation protocol is designed: Alice performs a Bell state measurement on the unknown input state and the local entangled mode using homodyne detection, while Bob reconstructs the quantum state based on the classical communication results through conditional displacement. This research theoretically establishes the feasibility of microcavity entanglement sources for high-fidelity quantum teleportation, with numerical simulations confirming the predicted performance.
Quantum teleportation, one of the most significant protocols in quantum information processing, allows the unembodied transfer of an unknown quantum state from one location to another distinct location. Here, we propose a scheme of continuous-variable quantum teleportation, wherein the two-mode Gaussian entangled state generated by a correlated spontaneous emission laser (CEL) system is used as a quantum resource. Initially, the two quantized cavity fields, in the form of single-mode Gaussian states characterized by the non-classicality and purity of the states, along with a strong classical field, are coupled to the gain medium of the CEL system. We consider a squeezed coherent state (SCS) for the teleportation process and calculate the time-dependent expression for its teleportation fidelity using the Wigner function formalism. In this framework, we thoroughly analyze the teleportation of the SCS, using its fidelity, for various parameters of the proposed system. We show that the amplified entanglement generated by the CEL system leads to an optimized fidelity for the teleportation of SCS.
In this work, we investigate the performance of non-Gaussian entangled resources in continuous-variable quantum teleportation within a realistic setting. We describe the characteristic functions of three distinct entangled resources, a two-mode squeezed vacuum state, a two-mode photon-subtracted squeezed state, and a two-mode photon-added squeezed state. We extend the theoretical analysis by Yang et al. to include the realistic experimental conditions such as photon losses, imperfect measurements which typically affect continuous-variable quantum teleportation. Our results demonstrate that even in non-ideal situations, the photon-subtracted squeezed state outperforms the other two resources in the low squeezing regime, keeping fidelity above the classical threshold that suggests the robustness of photon-subtracted squeezed state in practical teleportation applications. We further analyze the EPR correlations of these entangled resources, revealing that the photon-subtracted squeezed state exhibits stronger EPR correlations than the original two-mode squeezed vacuum state and the two-mode photon-added squeezed state. This study merges theoretical models with realistic imperfections and utilizes non-Gaussian entanglement into high-fidelity quantum teleportation.
Introduction: Continuous-variable quantum teleportation and entanglement distribution are fundamental building blocks for future quantum internet infrastructures. Quantum passive optical networks (QPONs) provide a promising architecture for scalable multi-user quantum communication by exploiting the mature passive optical network infrastructure. Materials and methods: We develop a theoretical framework for continuous-variable entanglement distribution and quantum teleportation in QPONs using two-mode squeezed vacuum states propagating through splitter–combiner–loss channels. Both downlink and uplink architectures are investigated under assisted and non-assisted protocols. The performance is analyzed using covariance matrix formalism, logarithmic negativity, and teleportation fidelity, and closed-form analytical expressions are derived together with numerical evaluations. Results: The analysis demonstrates that downlink entanglement distribution consistently outperforms the uplink architecture in terms of both logarithmic negativity and teleportation fidelity except in noise-less channels. Assisted protocols further enhance the achievable performance compared with non-assisted schemes. We derive the optimum squeezing parameter for non-assisted teleportation, showing that excessive squeezing may become detrimental because of network loss and splitting. Numerical results quantify the effects of network size, transmission distance, channel excess noise, detector imperfections, and measurement-added noise on entanglement distribution and teleportation performance. Also, we have showed that the time-division multiple-access is the preferred scheduling scheme between the users. Conclusions: The proposed framework establishes fundamental performance limits for continuous-variable QPONs and identifies practical design guidelines for scalable quantum access networks. The results demonstrate the advantages of downlink entanglement distribution and assisted teleportation, providing theoretical support for the development of future multi-user quantum communication and quantum internet infrastructures.
We propose a coherent control scheme for engineering quantum correlations in a cavity optomechanical (COM) system consisting of a driven optical cavity with an embedded nonlinear medium and a membrane, assisted by a coherent feedback loop. The nonlinear medium and the membrane are pumped to implement optical and mechanical parametric amplifications with controllable modulation frequencies and pump amplitudes. Within the stable regime identified by Floquet analysis, the feedback-induced enhancement of optomechanical entanglement persists when the period-averaged mean-field intracavity photon number is matched, showing that the enhancement cannot be attributed simply to an increase in this quantity. A systematic comparison of the four configurations further reveals a nonadditive interplay between dual parametric amplification and coherent feedback. Varying the amplitude reflectivity of the beam splitter and the feedback loop phase enables effective control of optomechanical entanglement and directional EPR steering, including a transition from one-way to two-way steering. The combined scheme also improves the robustness of both correlations against thermal noise, providing a potential route toward robust quantum-state engineering in COM systems.