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arXiv:2510.13402

Quantum teleportation, entanglement, LQU and LQFI in $e^{+}e^{-} \to \text{Y}\bar{\text{Y}}$ processes at BESIII through noisy channels

Elhabib Jaloum, Mohamed Amazioug

Published Oct 15, 2025• 0 citations
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Abstract

Quantum teleportation, a protocol that has received extensive and intensive attention in quantum information processing, allows a quantum state to be transferred from one particle to another. In this study, we analytically investigate fidelity ($F$), logarithmic negativity (LN), local quantum uncertainty (LQU) and local quantum Fisher information (LQFI) as a discord-like measure of quantum correlations in $e^{+}e^{-} \to \text{Y}\bar{\text{Y}}$ processes at BESIII through noisy channels, using experimental feasible parameters, where $\text{Y}$ and $\bar{\text{Y}}$ refer to the spin-$1/2$ hyperon and its antihyperon, respectively. Without a dephasing effect, we show that, LN, LQU, and LQFI vanish at $φ=\pmπ$ and are symmetric around $φ=π/2$. We also explore the LN, LQU, and LQFI for different $\text{Y}\bar{\text{Y}}$ pairs subjected to three distinct types of decoherence channels. Specifically, we show that amplitude damping (AD) and phase damping (PD) lead to a decrease in LN, LQU, and LQFI with an increasing decoherence parameter $s$. In contrast, the phase flip (PF) channel exhibits symmetric behavior around $s=1/2$. Besides, we realize for teleportation, optimal fidelity for different hyperon-antihyperon pairs ($ Λ\barΛ$, $Ξ^{0}\bar{Ξ^{0}}$, $Ξ^{-}\bar{Ξ^{+}}$, $Σ^{+}\bar{Σ^{-}}$). We discuss the influence of noisy channels, specifically (AD, PF and PD), on the fidelity of quantum teleportation and on quantum correlations that can exist even beyond entanglement. Furthermore, the results show that the fidelity remains above the classical limit of $2/3$ in all three channels, even as the noise increases. This is a significant finding because it shows that not all quantum noise is detrimental. These results can have promising applications in quantum information and particle physics.

DOI
10.48550/arxiv.2510.13402

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Quantum teleportation, a protocol that has received extensive and intensive attention in quantum information processing, allows a quantum state to be transferred from one particle to another. In this study, we analytically investigate fidelity ( F ), logarithmic negativity (LN), local quantum uncertainty (LQU) and local quantum Fisher information (LQFI) as a discord-like measure of quantum correlations in e + e − → Y Y ¯ processes at BESIII through noisy channels, using experimental feasible parameters, where Y and Y ¯ refer to the spin-1/2 hyperon and its antihyperon, respectively. We discuss the dependence of LN, LQU and LQFI on the scattering angle θ for different hyperon-antihyperon pairs ( Λ Λ ¯ , Ξ 0 Ξ 0 ¯ , Ξ − Ξ + ¯ , Σ + Σ − ¯ ), produced by electron-positron annihilation via charmonium decay. Without a dephasing effect, we show that, LN, LQU, and LQFI vanish at φ = ± π and are symmetric around φ = π / 2 . Furthermore, LN reaches its maximum when the scattering angle equals φ = π / 2 , while LQU and LQFI reach their maxima at different angles. We also explore the LN, LQU, and LQFI for different Y Y ¯ pairs subjected to three distinct types of decoherence channels. Specifically, we show that amplitude damping (AD) and phase damping (PD) lead to a decrease in LN, LQU, and LQFI with an increasing decoherence parameter s . In contrast, the phase flip (PF) channel exhibits symmetric behavior around s = 1 / 2 . Besides, we realize for teleportation, optimal fidelity for different hyperon-antihyperon pairs ( Λ Λ ¯ , Ξ 0 Ξ 0 ¯ , Ξ − Ξ + ¯ , Σ + Σ − ¯ ). We discuss the influence of noisy channels, specifically (AD, PF and PD), on the fidelity of quantum teleportation and on quantum correlations that can exist even beyond entanglement. Furthermore, the results show that the fidelity remains above the classical limit of 2/3 in all three channels, even as the noise increases. This is a significant finding because it shows that not all quantum noise is detrimental. These results can have promising applications in quantum information and particle physics.
Comment on "Quantum teleportation, entanglement, LQU and LQFI in e+e−→YY‾e^{+} e^{-} \rightarrow \mathrm{Y} \overline{\mathrm{Y}}e+e−→YY processes at BESIII through noisy channels''
We provide a critical assessment of a recent study applying quantum information concepts, including noisy channels and teleportation fidelity, to hyperon-antihyperon pairs produced in e+e−→YYˉe^{+}e^{-} \to Y\bar Ye+e−→YYˉ reactions at BESIII. While the spin density matrix reconstructed from experimental data provides a physically meaningful description of production correlations, we argue that its subsequent interpretation in terms of standard decoherence models-such as amplitude damping, phase damping, and phase flip-lacks a clear physical correspondence for these systems. The produced particles emerge from a single scattering event and propagate as free, unstable relativistic states, without a well-defined system-environment interaction acting on their spin degrees of freedom. As a result, the variation of quantum correlations with an abstract noise parameter does not describe a genuine physical evolution. We further contend that the reported teleportation fidelity should not be interpreted as evidence for operational quantum communication, since hyperon states cannot be prepared, controlled, or measured in a way that would enable a realizable teleportation protocol. More generally, quantities such as logarithmic negativity, local quantum uncertainty, and local quantum Fisher information primarily characterize static production correlations rather than directly usable quantum resources. Our analysis highlights the importance of distinguishing between formal quantum-information measures and their physical interpretation in high-energy particle systems.
Characterizing quantum correlations and quantum teleportation in gg→ttˉgg \to t\bar{t}gg→ttˉ and qqˉ→ttˉq\bar{q} \to t\bar{t}qqˉ​→ttˉ processes under noisy channels
The measurement of top-quark spin correlations provides a key tool for probing its interactions with high precision. Owing to its extremely short lifetime (τ∼10−25τ\sim 10^{-25}τ∼10−25 s), the top quark preserves its spin polarization information, making the ttˉt\bar{t}ttˉ system an ideal framework for investigating quantum correlations in high-energy physics. In this work, we analyze quantum correlations in ttˉt\bar{t}ttˉ pairs produced in QCD using several quantum information-theoretic measures, including Bell nonlocality, quantum steering, concurrence, and geometric quantum discord. Their dependence on kinematic variables is examined in both the gg→ttˉgg \to t\bar{t}gg→ttˉ and qqˉ→ttˉq\bar{q} \to t\bar{t}qqˉ​→ttˉ channels, with convergence toward the gg→ttˉgg \to t\bar{t}gg→ttˉ dominated regime in the ultra-relativistic limit (β=1β= 1β=1). We also investigate the effect of three effective decoherence channels (AD, PD, and PF). The AD and PD channels lead to a monotonic degradation of correlations as the decoherence parameter ppp increases, while the PF channel exhibits a symmetric behavior around p=1/2p=1/2p=1/2. The impact of these channels on quantum teleportation is analyzed, showing that it remains above the classical threshold of 2/32/32/3 even in the presence of noise. These results indicate that certain quantum resources can persist despite decoherence, opening new perspectives at the interface of quantum information and particle physics.
In distributed quantum computing, quantum networks provide a potential infrastructure for long-range quantum information processing. Controlled quantum teleportation (CQT) is a key practically relevant protocol that can connect two parties on a network and enables a third party, the controller to allow or abort the secure teleportation of an arbitrary single-qubit state between the two parties. We investigate the robustness of a three-qubit GHZ resource under bit-flip, phase-flip, depolarizing, and amplitude-damping noise. Using the Kraus-operator formalism, we characterize the noisy resource through multipartite quantum discord, genuine multipartite concurrence (GMC), localizable entanglement (LE), and CQT fidelity. We also outline a proof-of-concept photonic implementation for preparing the three-qubit GHZ resource and realizing the CQT protocol, which could enable experimental investigation of the effects of noise. Our results show that bit-flip and amplitude-damping noise generally preserve useful mutipartite quantum correlations over broader noise parameter ranges. Interestingly, multipartite discord exhibits freezing under bit-flip noise over a finite parameter regime. Moreover, discord can persist beyond the sudden death of genuine multipartite entanglement, revealing the distinct robustness of nonclassical correlations. We further demonstrate that CQT fidelity which characterizes the performance of CQT can exceed the classical threshold even after GMC vanishes, while LE more closely reflects the operational usefulness of the noisy resource. These findings highlight the complementary roles of quantum correlations and entanglement in assessing the resilience of GHZ-based protocols.
In quantum information theory, effects of quantum noise on teleportation are undeniable. Hence,we investigate the effect of noisy channels including amplitude damping, phase damping, depolarizing and phase ip on the teleported state between Alice and Bob where they share an entangled state by using atom-eld interaction state. We analyze the delity and quantum correlations as a function of decoherence rates and time scale of a state to be teleported. We observe that the average delityand quantum correlations accurately depend on types of noise acting on quantum channels. It is found that atom-eld interaction states are affected by amplitude damping channel are more useful for teleportation than when the shared qubites are affected by noisy channels such as AD channel and phase ip. We also observe that if the quantum channels is subject to phase ip noise, the average delity reproduces initial quantum correlations to possible values. On the other hand,not only all the noisy quantum channels do not always destroy average delity but also they can yield the highest delity in noisy conditions. In the current demonstration, our results provide that the average delity can have larger than 2/3 in front of the noise of named other channels with increasing decoherenc strength. Success in quantum states transfer in the present noise establishes the important of studing noisy channels.
The present paper investigates whether teleportation provides a higher quality of state transfer than direct transmission through the same noisy channel. We consider bit-flip, phase-flip, amplitude-damping, phase-damping, and depolarizing noises for the transfer of Bell-like and GHZ-like states, under both distance-dependent and time-dependent noise models. Our results show that the relative advantage of teleportation depends strongly on the noise channel and noise model. For the Bell-like state, teleportation remains superior throughout the distance-dependent model for BF, AD, and PD noise, whereas PF and DP exhibit limited regions favoring direct transmission. For the GHZ-like state, teleportation remains superior throughout for PD and DP noise, while BF, PF, and AD show parameter-dependent behavior. The time-dependent model further modifies these trends due to the additional decoherence associated with the waiting time for classical communication. We also compare the teleportation fidelities with the classical measure-and-prepare benchmark 2/3, revealing channel-dependent regions in which the classical limit is surpassed. These findings highlight the role of noise structure and communication time in determining the conditions under which teleportation provides an advantage over direct transmission.