量子隐形传态、纠缠、LQU和LQFI在BESIII通过噪声通道的$e^{+}e^{-} \to \text{Y}\bar{\text{Y}}$过程中的研究
Quantum teleportation, entanglement, LQU and LQFI in $e^{+}e^{-} \to \text{Y}\bar{\text{Y}}$ processes at BESIII through noisy channels
AI总结：
本研究解析研究了BESIII上$e^{+}e^{-} \to \text{Y}\bar{\text{Y}}$过程通过噪声通道的量子隐形传态保真度及量子关联度量，发现保真度在噪声下仍高于经典极限，表明部分噪声并非有害。
摘要：
量子隐形传态是一种在量子信息处理中受到广泛而深入关注的协议，它允许量子态从一个粒子转移到另一个粒子。在本研究中，我们利用实验可行的参数，解析地研究了BESIII上$e^{+}e^{-} \to \text{Y}\bar{\text{Y}}$过程中通过噪声通道的保真度（$F$）、对数负性（LN）、局部量子不确定性（LQU）和局部量子Fisher信息（LQFI），作为量子关联的类失谐度量，其中$\text{Y}$和$\bar{\text{Y}}$分别指自旋-$1/2$超子及其反超子。在没有退相效应的情况下，我们表明LN、LQU和LQFI在$φ=\pmπ$处消失，并在$φ=π/2$周围对称。我们还探讨了经受三种不同类型退相干通道的不同$\text{Y}\bar{\text{Y}}$对的LN、LQU和LQFI。具体来说，我们表明振幅阻尼（AD）和相位阻尼（PD）导致LN、LQU和LQFI随退相干参数$s$的增加而减少。相反，相位翻转（PF）通道在$s=1/2$周围表现出对称行为。此外，我们实现了不同超子-反超子对（$Λ\barΛ$，$Ξ^{0}\bar{Ξ^{0}}$，$Ξ^{-}\bar{Ξ^{+}}$，$Σ^{+}\bar{Σ^{-}}$）的隐形传态最优保真度。我们讨论了噪声通道（具体为AD、PF和PD）对量子隐形传态保真度以及可能超越纠缠存在的量子关联的影响。此外，结果表明，在所有三个通道中，即使噪声增加，保真度仍保持在经典极限$2/3$之上。这是一个重要的发现，因为它表明并非所有量子噪声都是有害的。这些结果在量子信息和粒子物理中具有广阔的应用前景。
英文摘要：
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.
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