Personal Information
Name: Chao Zhang
Birth: August 13, 1997
Email: zhangcha@mail.ustc.edu.cn
Education
2015.09-2019.06: University of Science and Technology of China, School of Physics, Photoelectric Information Science (Bachelor), Computer Science and Technology (Minor)
2019.09-2024.06: University of Science and Technology of China, School of Physics, Physics (Quantum Optics) (PhD)
2024.10-now： Technical University of Denmark，Physics（Postdoc）
Summary of Expertise
- Quantum nonlocality, including quantum Bell nonlocality, quantum steering, and quantum entanglement, is an important phenomenon of subverting local realism and an important resource for realizing quantum technologies such as random number generation, quantum key distribution, quantum teleportation, and so on.
- Design and build a high-dimensional and efficient entanglement source, and use Eberhard inequality to test the four-dimensional Bell nonlocality without detection loophole. Afterwards, we explore the relationship between Bell nonlocality and inherent randomness in high-dimensional systems with multiple measurements and multiple outputs.
- Exploring the rich structure of genuine one-way steering in high-dimensional systems. We perform theoretical characterization and experimental verification of the steering structure of corresponding entangled quantum states, where two parties can guide each other, but the phenomenon of asymmetric steering ability.
- Nonlocal quantum gates over 7.0 km. The 580 photons generated by parametric down conversion in PPLN waveguide with laser at 421nm are stored for 80us in laboratory A, and the 1537 photons generated are distributed to laboratory B 7km away by special low-loss fibers. Laboratories A and B respectively perform local CNOT operations. Detect the photons in laboratory B, and based on the results, use EOM to operate the photons in laboratory A (LOCC) to achieve the teleportation of CNOT. On this basis, we demonstrated the Deutsch and phase estimation algorithm.
Current Affiliation
DTU, physics
Skills
- Preparation of high-quality high-dimensional quantum entanglement sources
- Construction of optical systems to achieve quantum evolution and measurement.
- Optical system phase locking, use of optoelectronic devices (AOM, EOM) and etalon, etc.
- Close cooperation with domestic and foreign theoretical groups.
- Not procrastinating, full of work enthusiasm, self-driven scientific researchers.
Research Highlights
- Prepare four-dimensional entangled source with efficiency 71.6% and test high-dimensional Bell nonlocality without efficiency loophole. [PRL 129(6), 060402(2022)]
- Teleport the CNOT gate to 7km away to complete Bell state preparation and demonstrate Deutsch and phase estimation algorithms. [arXiv preprint arXiv:2307.15634]
- Utilizing quantum catalysis to amplify the asymmetry resources of qubit. In the presence of experimental noise, an effective increase in asymmetry resources of the qubit was still observed, which was the first experimental proof of quantum catalysis. [under review]
Employment History
2021.09-2022.02: Teaching Assistant, University of Science and Technology of China. Course: Optics. Lecturer: Prof. Bi-Heng Liu.
Responsibility: Organize exercise and Q&A classes; Marking assignments and examination papers; Assist in tutoring students.
2023.8-2024.06: Research Assistant, Hefei National Laboratory.
Responsibility: Assist in the construction and testing of high-dimensional quantum systems.
Academic Conferences
- The 20th National Quantum Optics Academic Conference (2022)
- The 9th Doctoral Academic Forum of the PFUNT Alliance (2022)
- The 14th International Conference on Information Optics and Photonics (CIOP2023)
- CPS Fall Meeting (2023)
- International Conference on Quantum Photonics (2023)
Certificates and Honors
- Excellent Student Scholarship (2016, 2017)
- Academic Scholarship of USTC (2019~2023)
- Tang ZhongYing Scholarship (2017, 2018)
- The Second Award of the Big Data + Mathematical Modeling Contest of USTC (2018)
- Excellent Oral Report Award of the 20th National Quantum Optics Academic Conference (2022)
- The Second Award of the 9th Doctoral Academic Forum of the Five University Alliance (2022)
- China Physics 2023 Autumn Conference Excellent Wall Poster Award (2023)
Research Publications
- 1. C Zhang*, XM Hu*, F Ding, XY Hu, Y Guo, BH Liu, YF Huang, CF Li, GC Guo. Experimental Catalytic Amplification of Asymmetry. Physical Review Letters 133, 140201 (2024)..
- 2. XM Hu*, C Zhang*, BH Liu, Y Guo, WB Xing, CX Huang, YF Huang, CF Li, GC Guo. High-Dimensional Bell Test without Detection Loophole. Physical Review Letters 129 (6), 060402 (2022).
- 3. R Qu*, C Zhang*, ZH Chang, Y Guo, XM Hu, CF Li, GC Guo, P Zhang, BH Liu. Observation of Diverse Asymmetric Structures in High-Dimensional Einstein-Podolsky-Rosen Steering. Physical Review Letters 132 (21), 210202 (2024).
- 4. XM Hu, C Zhang, Y Guo, FX Wang, WB Xing, CX Huang, BH Liu, YF Huang, GC Guo, XQ Gao, M Pivoluska, M Huber. Pathways for entanglement-based quantum communication in the face of high noise. Physical Review Letters 127 (11), 110505 (2021).
- 5. H Zhang*, C Zhang*, XM Hu, BH Liu, YF Huang, CF Li, GC Guo. Arbitrary two-particle high-dimensional Bell-state measurement by auxiliary entanglement. Physical Review A 99 (5), 052301 (2019).
- 6. XM Hu, CX Huang, YB Sheng, L Zhou, BH Liu, Y Guo,C Zhang, WB Xing, YF Huang, CF Li, GC Guo. Long-distance entanglement purification for quantum communication. Physical Review Letters 126 (1), 010503.
- 7. S Ru, CX Huang, XM Hu, C Zhang, F Wang, N Liu, WD Tang, P Zhang, BH Liu, FL Li. Experimental implementation of Hardy-like quantum pigeonhole paradoxes. Physical Review A 107 (2), 022207.
- 8. XM Hu, CX Huang, YB Sheng, L Zhou, BH Liu, Y Guo,C Zhang, WB Xing, YF Huang, CF Li, GC Guo. Long-distance entanglement purification for quantum communication. Physical Review Letters 126 (1),010503.
- 9. X Liu*, XM Hu*, TX Zhu*, C Zhang, YX Xiao, JL Miao, ZW Ou, BH Liu, ZQ Zhou, CF Li, GC Guo. Nonlocal quantum gates over 7.0 km. Nature Communications 15 (1), 8529 (2024)
Preprints
1. C Zhang*, Y Li*, XM Hu*, Y Xiang, CF Li, GC Guo, J Tura, QY He, BH Liu. Randomness Certification with Multi-input and Multi-output in Nonlocality Scenario. [under review]
2. LT Feng*, XM Hu*, M Zhang*, YJ Cheng, C Zhang, Y Guo, YY Ding, ZB Hou, FW Sun, GC Guo, DX Dai, A Tavakoli, XF Ren, BH Liu. Higher-dimensional symmetric informationally complete measurement via programmable photonic integrated optics. arXiv preprint arXiv: 2310.08838.
个人信息
姓名：张超
出生日期：1997年8月13日
邮箱：zhangcha@mail.ustc.edu.cn
教育经历
2015.09-2019.06：中国科学技术大学，物理学院，光电信息科学（本科），计算机科学与技术（辅修）
2019.09-2024.06：中国科学技术大学，物理学院，物理（量子光学）（博士）
2024.10-now：丹麦科技大学，物理学院（博后）
实验研究
- 量子非局域性，包括量子贝尔非局域性、量子引导和量子纠缠，是颠覆局域实在论的重要现象，也是实现量子技术如随机数生成、量子密钥分发、量子传态等的重要资源。
- 设计并构建高维高效纠缠源，并使用Eberhard不等式在无检测漏洞的情况下测试四维贝尔非局域性。随后，我们在多测量和多输出的高维系统中探讨贝尔非局域性与内在随机性的关系。
- 探索高维系统中真实单向引导的丰富结构。我们对相应纠缠量子态的引导结构进行理论表征和实验验证，其中双方可以互相引导，但存在非对称引导能力的现象。
- 跨越7.0公里的非局域量子门。421nm激光在PPLN波导中通过参量下转换产生的580个光子在实验室A中存储80us，而1537个光子通过特殊低损耗光纤分发到7公里外的实验室B。A和B实验室分别执行局部CNOT操作。检测B实验室中的光子，并根据结果使用EOM操作A实验室中的光子（LOCC），实现CNOT的传态。在此基础上，我们展示了Deutsch和相位估计算法。
技能
- 制备高质量的高维量子纠缠源
- 构建光学系统实现量子演化和测量。
- 光学系统相位锁定，使用光电设备（AOM、EOM）和标准具等。
- 与国内外理论组紧密合作。
- 不拖延，工作热情充沛，自驱动的科学研究者。
研究亮点
- 制备效率为71.6%的四维纠缠源并无效率漏洞地测试高维贝尔非局域性。[PRL 129(6), 060402(2022)]
- 将CNOT门传态到7公里外完成贝尔态制备并展示Deutsch和相位估计算法。[arXiv preprint arXiv:2307.15634]
- 利用量子催化放大量子比特的非对称资源。在存在实验噪声的情况下，仍然有效地增加了量子比特的非对称资源，这是量子催化的首次实验证明。[under review]
工作经历
2021.09-2022.02：中国科学技术大学，教学助理。课程：光学。教师：柳必恒教授。<>
职责：组织习题和答疑课；批改作业和试卷；协助指导学生。
2023.8-2024.06：合肥国家实验室，研究助理。<\p>
职责：协助构建和测试高维量子系统。
学术会议
- 第20届全国量子光学学术会议（2022）
- 第9届PFUNT联盟博士生学术论坛（2022）
- 第14届信息光学与光子学国际会议（CIOP2023）
- 中国物理学会秋季会议（2023）
- 量子光子学国际会议（2023）
证书与荣誉
- 优秀学生奖学金（2016、2017）
- 中科大学术奖学金（2019~2023）
- 唐仲英奖学金（2017、2018）
- 中科大大数据+数学建模竞赛二等奖（2018）
- 第20届全国量子光学学术会议优秀口头报告奖（2022）
- 第9届五校联盟博士生学术论坛二等奖（2022）
- 中国物理2023秋季会议优秀墙报奖（2023）
Research Publications
- 1. C Zhang*, XM Hu*, F Ding, XY Hu, Y Guo, BH Liu, YF Huang, CF Li, GC Guo. Experimental Catalytic Amplification of Asymmetry. Physical Review Letters 133, 140201 (2024).
- 2. XM Hu*, C Zhang*, BH Liu, Y Guo, WB Xing, CX Huang, YF Huang, CF Li, GC Guo. High-Dimensional Bell Test without Detection Loophole. Physical Review Letters 129 (6), 060402 (2022).
- 3. R Qu*, C Zhang*, ZH Chang, Y Guo, XM Hu, CF Li, GC Guo, P Zhang, BH Liu. Observation of Diverse Asymmetric Structures in High-Dimensional Einstein-Podolsky-Rosen Steering. Physical Review Letters 132 (21), 210202 (2024).
- 4. XM Hu, C Zhang, Y Guo, FX Wang, WB Xing, CX Huang, BH Liu, YF Huang, GC Guo, XQ Gao, M Pivoluska, M Huber. Pathways for entanglement-based quantum communication in the face of high noise. Physical Review Letters 127 (11), 110505 (2021).
- 5. H Zhang*, C Zhang*, XM Hu, BH Liu, YF Huang, CF Li, GC Guo. Arbitrary two-particle high-dimensional Bell-state measurement by auxiliary entanglement. Physical Review A 99 (5), 052301 (2019).
- 6. XM Hu, CX Huang, YB Sheng, L Zhou, BH Liu, Y Guo,C Zhang, WB Xing, YF Huang, CF Li, GC Guo. Long-distance entanglement purification for quantum communication. Physical Review Letters 126 (1), 010503.
- 7. S Ru, CX Huang, XM Hu, C Zhang, F Wang, N Liu, WD Tang, P Zhang, BH Liu, FL Li. Experimental implementation of Hardy-like quantum pigeonhole paradoxes. Physical Review A 107 (2), 022207.
- 8. XM Hu, CX Huang, YB Sheng, L Zhou, BH Liu, Y Guo,C Zhang, WB Xing, YF Huang, CF Li, GC Guo. Long-distance entanglement purification for quantum communication. Physical Review Letters 126 (1),010503.
- 9. X Liu*, XM Hu*, TX Zhu*, C Zhang, YX Xiao, JL Miao, ZW Ou, BH Liu, ZQ Zhou, CF Li, GC Guo. Nonlocal quantum gates over 7.0 km. Nature Communications 15 (1), 8529 (2024).
Preprints
1. C Zhang*, Y Li*, XM Hu*, Y Xiang, CF Li, GC Guo, J Tura, QY He, BH Liu. Randomness Certification with Multi-input and Multi-output in Nonlocality Scenario. [under review]
2. LT Feng*, XM Hu*, M Zhang*, YJ Cheng, C Zhang, Y Guo, YY Ding, ZB Hou, FW Sun, GC Guo, DX Dai, A Tavakoli, XF Ren, BH Liu. Higher-dimensional symmetric informationally complete measurement via programmable photonic integrated optics. arXiv preprint arXiv: 2310.08838.