[2025/10/15] 研究新發現:量子網路中量子同調性質傳輸的檢測 [New Research Findings: Detection of Coherence Transfer in Quantum Networks]

在量子網路中,量子同調性質轉移對於連接各個量子系統節點至關重要。然而,在複雜網路中檢測同調性質的轉移與傳輸仍然是一項重大挑戰,尤其是在實驗可靠性有限且網路存取受限的情況下。我們利用同調性質的靜態和動態特性來檢測量子網路中的同調傳輸。此方法僅需兩種實驗設置,無需考慮網路規模,僅需要在非同調態基底狀態上的測量,以及在檢查點節點處檢測能力未知的不可信操作。它能夠適應有限的網路存取並容忍不可信任的檢查節點。利用多光子糾纏,我們透過實驗實現了該方法,以明確地檢測四光子和六光子糾纏網絡中偏振量子位元的同調傳輸。我們觀察到,這些網路能夠分別透過遠端狀態準備和糾纏交換,實現單一量子位元同調性傳輸,與傳輸兩個量子位元的同調性。 Transferring coherence is essential in quantum networks for connecting nodes of individual quantum systems. However, detecting coherence transfer remains a significant challenge in complex networks, especially when experimental reliability is limited and access to the network, such as for tomography measurements, is restricted. Here, we leverage both the static and dynamic properties of coherence ... Read More

[2025/10/01] 專題研究成果:實驗室兩組專題團隊分別榮獲工科系114大學部專題競賽優等與佳作 [Two research teams from the laboratory were awarded the Outstanding and Excellent Prizes, respectively, in the Department of Engineering Science’s 114th Undergraduate Project Study Competition]

實驗室兩組專題團隊之研究課題:透過圖著色分析確定不可信量子網路的可擴展保真度下限 與 開發用於基礎量子技術的高保真糾纏光子源:三明治結構源的建模與分析,分別榮獲工科系114大學部專題競賽成果優等與佳作。Two research teams from the laboratory, titled “Determining the Scalable Fidelity Lower Bound of Untrusted Quantum Networks via Graph Coloring Analysis” and “Developing High-Fidelity Entangled Photon Sources for Fundamental Quantum Technologies: Modeling and Analysis of Sandwich-Structure Sources,” were awarded the Outstanding and Excellent Prizes, respectively, in the Department of Engineering Science’s 114th Undergraduate ... Read More