From entangled photons to quantum computers and networks

Exploring Quantum Science and Technology with

Photon Entanglement

從糾纏光子到量子電腦與網路
光子糾纏中的量子科學與技術

[2024/08/14]“量子網路中多光子糾纏之確認” 研究成果已發表於 npj Quantum Information [The research result of the study on “Scalable Determination of Multipartite Entanglement in Quantum Networks” has been accepted and published in npj Quantum Information]

我們提出了「透過偵測真正的 N 節點 Einstein-Podolsky-Rosen 量子可操縱性」來實現量子網路的保真度和真正的多節點糾纏的確認,並且在不受信任的星形網路中,確定量子網路保真度和真正的 N 節點糾纏僅需要 N+1 組測量。實驗上,我們使用光學裝置演示了真正的 3 光子和 4 光子量子網路的確認,以及廣泛使用的糾纏目擊的誤報,即 1/2 的保真度標準。我們期望透過進一步的研究,該方法可以擴展到其他類型的網路拓撲以適用於通用的量子網路。 有關該研究與成果的更多參考資料及資訊,請參閱:(1)Research中「實驗糾纏光子與多光子糾纏的產生與識別」的介紹:http://cmli.es.ncku.edu.tw/?page_id=18(2)npj Quantum Information期刊刊載頁面:https://doi.org/10.1038/s41534-024-00867-0(3)npj Quantum Information期刊論文全文:https://rdcu.be/dQl58 Our results provide a network determination method to determine quantum network fidelity and genuine multi-node entanglement, which is enabled by detecting genuine N-node Einstein-Podolsky-Rosen steerability, and such determination in an untrusted star network requires only ... Read More

[2024/03/16]“運用非CP過程量子過程能力於光子非馬可夫動力學之識別” 研究成果已發表於 ADVANCED QUANTUM TECHNOLOGIES [THE RESEARCH RESULT OF THE STUDY ON “Photonic Non-Markovianity Identification by Quantum Process Capabilities of Non-CP Processes” HAS BEEN PUBLISHED IN ADVANCED QUANTUM TECHNOLOGIES]

我們提出了一種基於非CP過程(新的量子過程能力)的方法來識別和測量量子動力學中的非馬可夫性質,而無需狀態最佳化和使用糾纏資源之負擔。我們忠實地證明了該方法可以使用全光學裝置實現之。結果也可用於探索可實現製程或狀態斷層掃描的動態系統中的非馬可夫特性。 (https://doi.org/10.1002/qute.202300246) A method based on non-CP processes, which are new quantum process capabilities, is introduced to identify and measure non-Markovianity without the burden of state optimization and entanglement. It is faithfully demonstrated that the method can be explicitly implemented using all-optical setups. The results can also be used to explore non-Markovianity in dynamical systems ... Read More

[2024/02/22]光子量子計算、通訊與糾纏光子的製造線上課程暨實驗室參觀 2024/03/02

日 期:2024/03/02(六) 時 間:下午14點00分至17點00分 講 師:李哲明教授(前沿量子科技研究中心/成功大學工科系) 課程概述:“糾纏光子”具備奇異的量子特性,作為“光子量子資訊處理”重要之媒介與資源,與傳統資訊處理相較起來,這種嶄新的資訊處理方式具備更快之計算效率,並讓資訊保存與傳遞更加安全。本課程結合理論與實驗,介紹糾纏光子之製造、轉換與識別所需的基本概念與實現方法,了解如何利用光子的糾纏特性完成光子資訊處理任務。 課程目標: 認識糾纏光子之基本性質 理解糾纏光子之製造、偵測與應用之基本原理與實驗方法  課程內容: 介紹糾纏光子的製造原理 介紹糾纏光子的識別方法 糾纏光子之實驗製造、偵測與應用  對 象:高中職生、大學生名 額:50位(報名人數超過,則採隨機挑選。) 地 點:線上會議 報名費用:免報名費、免保證金 報名截止:113/02/22(四) 活動報名網址:https://forms.gle/9moKAHEzAyPyYYdU6 聯 絡 人:傅小姐 聯絡電話:06-2757575 ext. 65081 聯絡Email:etoile@phys.ncku.edu.tw ... Read More

[2024/01/24]研究生學位論文獎-優等獎 Postgraduates Student Thesis Award from the Physical Society of Taiwan – Merit award

社團法人台灣物理學會為表揚 孫聖諺同學 在 Experimental Capability of Photon Interference for Generating Six-Photon Entanglement 畢業論文的優異表現經學術委員會同意,頒發研究生優良論文優等獎,以資鼓勵。 The Physical Society of Taiwan, in recognition of the outstanding performance of student Sheng-Yen Sun in the graduation thesis titled “Experimental Capability of Photon Interference for Generating Six-Photon Entanglement,” has received approval from the Academic Committee to award the Graduate Merit Thesis ... Read More

[2023/06/04]“實驗過程中量子關聯的產生能力” 研究成果已發表於 Advanced Quantum Technologies [The research result of the study on “Quantum Correlation Generation Capability of Experimental Processes” has been published in Advanced Quantum Technologies]

我們提出了一種實驗上可實施之方法,藉由簡單地準備分離狀態作為測試輸入,然後對相應輸出的單個量子位進行簡單的局域測量,就可識別實驗過程中量子關聯性(包括EPR操控性和貝爾非定域性)的產生能力。這一發現可用於通用量子計算中,雙量子位元控制邏輯閘客觀之基準測試。 A method is introduced for identifying the creation of quantum correlations, including EPR steering and Bell nonlocality, for experimental processes, by simply preparing separable states as test inputs and then performing local measurements on single qubits of the corresponding outputs. This finding enables the construction of objective benchmarks for the two-qubit controlled operations used ... Read More