Optimal toffoli-depth quantum adder
Siyi Wang, Ankit Mondal, and Anupam Chattopadhyay. 2025. Optimal Toffoli-Depth Quantum Adder. ACM Transactions on Quantum Computing 6, 3, Article 25 (September 2025), 16 pages. https://doi.org/10.1145/3743691
CV
Education
- Ph.D in Nanyang Technological University, Singapore, 2025
Work experience
- 2025/01-Now: Postdoctoral Researcher
- Nanyang Technological University
- Research Directions: Quantum Arithmetic, Quantum Cybersecurity.
- Supervisor: Prof. Anupam Chattopadhyay
- Fall 2024: Research Intern
- Huawei Hong Kong Research Center (HKRC)
- Research Directions: Quantum Arithmetic, EDA.
- Supervisor: Dr. Bentian Jiang, Dr. Weihua Sheng
- Spring 2024: Research Intern
- University of Hyogo, Japan
- Research Directions: Quantum Cryptanalysis.
- Supervisor: Prof. Takanori Isobe
Skills
- Coding
- Python, Matlab, C, C++, Latex, C#, Java, SQL, Qt, ……
- Quantum
- Qiskit, Project Q, LIGHTER-R, DORCIS, YETI, ……
- Misc.
- Academic research, teaching, training, Git, Latex typesetting and publishing.
Publications
Reducing T-Depth and T-Count in Quantum Multiplication Using Compressor Primitives
Siyi Wang, Suman Dutta, Wei Jie Bryan Lee, Jerrie Feng, Xiang Fang, and Anupam Chattopadhyay. 2025. Reducing T-Depth and T-Count in Quantum Multiplication Using Compressor Primitives. In Proceedings of the Great Lakes Symposium on VLSI 2025 (GLSVLSI ‘25). Association for Computing Machinery, New York, NY, USA, 35–40. https://doi.org/10.1145/3716368.3735184
Exact space-depth trade-offs in multicontrolled Toffoli decomposition
Dutta, Suman, Siyi Wang, Anubhab Baksi, Anupam Chattopadhyay, and Subhamoy Maitra. "Exact space-depth trade-offs in multicontrolled Toffoli decomposition." Physical Review A 111, no. 5 (2025): 052611. doi: 10.1103/PhysRevA.111.052611
A comprehensive study of quantum arithmetic circuits
Wang Siyi, Li Xiufan, Lee Wei Jie Bryan, Deb Suman, Lim Eugene and Chattopadhyay Anupam 2025A comprehensive study of quantum arithmetic circuitsPhil. Trans. R. Soc. A.38320230392 http://doi.org/10.1098/rsta.2023.0392
A Novel Current Comparator Enabling Large RRAM Crossbars for BNNs and PUFs
G. Rajendran, D. Basak, S. Deb, S. Wang and A. Chattopadhyay, "A Novel Current Comparator Enabling Large RRAM Crossbars for BNNs and PUFs," 2024 IFIP/IEEE 32nd International Conference on Very Large Scale Integration (VLSI-SoC), Tanger, Morocco, 2024, pp. 1-6, doi: 10.1109/VLSI-SoC62099.2024.10767833.
Minimum Depth Quantum Modular Addition Through Carry-Save Architecture
S. Wang, E. Lim, X. Li, J. Feng and A. Chattopadhyay, "Minimum Depth Quantum Modular Addition Through Carry-Save Architecture," 2024 IFIP/IEEE 32nd International Conference on Very Large Scale Integration (VLSI-SoC), Tanger, Morocco, 2024, pp. 1-6, doi: 10.1109/VLSI-SoC62099.2024.10767796.
Efficient Depth Optimization in Quantum Addition and Modular Arithmetic with Ling Structure
Wang, S., Chattopadhyay, A. (2024). Efficient Depth Optimization in Quantum Addition and Modular Arithmetic with Ling Structure. In: Elfadel, I.(.M., Albasha, L. (eds) VLSI-SoC 2023: Innovations for Trustworthy Artificial Intelligence. VLSI-SoC 2023. IFIP Advances in Information and Communication Technology, vol 680. Springer, Cham. https://doi.org/10.1007/978-3-031-70947-0_4
Quantum Implementation of Linear and Non-Linear Layers
Baksi, A., Chakraborty, S., Chattopadhyay, A., Chun, M., Islam, S.H., Jang, K., Kim, H., Oh, Y., Roy, S., Seo, H. and Wang, S., 2024, September. Quantum Implementation of Linear and Non-Linear Layers. In 2024 IEEE 37th International System-on-Chip Conference (SOCC) (pp. 1-6). IEEE. doi: 10.1109/SOCC62300.2024.10737862.
Efficient quantum circuits for machine learning activation functions including constant T-depth ReLU
Zi, Wei, Siyi Wang, Hyunji Kim, Xiaoming Sun, Anupam Chattopadhyay, and Patrick Rebentrost. "Efficient quantum circuits for machine learning activation functions including constant T-depth ReLU." Physical Review Research 6, no. 4 (2024): 043048. http://doi.org/10.1103/PhysRevResearch.6.043048
Boosting the efficiency of quantum divider through effective design space exploration
S. Wang, E. Lim and A. Chattopadhyay, "Boosting the Efficiency of Quantum Divider through Effective Design Space Exploration," 2024 IEEE International Symposium on Circuits and Systems (ISCAS), Singapore, Singapore, 2024, pp. 1-5, doi: 10.1109/ISCAS58744.2024.10557991.
POSTER: MalaQ-A Malware Against Quantum Computer
Wang, Siyi, Alex Jin, Suman Deb, Tarun Dutta, Manas Mukherjee, and Anupam Chattopadhyay. "POSTER: MalaQ-A Malware Against Quantum Computer." In Proceedings of the 19th ACM Asia Conference on Computer and Communications Security, pp. 1946-1948. 2024. https://doi.org/10.1145/3634737.3659432
Reducing depth of quantum adder using ling structure
S. Wang and A. Chattopadhyay, "Reducing Depth of Quantum Adder using Ling Structure," 2023 IFIP/IEEE 31st International Conference on Very Large Scale Integration (VLSI-SoC), Dubai, United Arab Emirates, 2023, pp. 1-6, doi: 10.1109/VLSI-SoC57769.2023.10321948.
Optimized quantum circuit implementation of payoff function
S. Lim et al., "Optimized Quantum Circuit Implementation of Payoff Function," 2023 IFIP/IEEE 31st International Conference on Very Large Scale Integration (VLSI-SoC), Dubai, United Arab Emirates, 2023, pp. 1-6, doi: 10.1109/VLSI-SoC57769.2023.10321843.
A higher radix architecture for quantum carry-lookahead adder
Wang, S., Baksi, A. & Chattopadhyay, A. A Higher radix architecture for quantum carry-lookahead adder. Sci Rep 13, 16338 (2023). https://doi.org/10.1038/s41598-023-41122-4
Hardware trojan detection at lut: Where structural features meet behavioral characteristics
L. Wu, X. Zhang, S. Wang and W. Hu, "Hardware Trojan Detection at LUT: Where Structural Features Meet Behavioral Characteristics," 2022 IEEE International Symposium on Hardware Oriented Security and Trust (HOST), McLean, VA, USA, 2022, pp. 121-124, doi: 10.1109/HOST54066.2022.9840276.
Talks
INWED 2025 SWE@SG
Presentation at International Women in Engineering Day 2025, AMD, Singapore
PhD Oral Defense
Presentation at HESL, SCSE, Nanyang Technological University, Singapore
SWE-NTU Research Showcase
Talk at SWE-NTU Research Showcase 2025, Nanyang Technological University, Singapore
Beating Quantum Computing through Classical Attacks
Presentation at 2nd Annual Quantum Computer Cybersecurity Symposium, Yale University, New Haven, Connecticut, USA
Minimum Depth Quantum Modular Addition through Carry-Save Architecture
Conference proceedings talk at IFIP/IEEE International Conference on Very Large Scale Integration (VLSI-SoC 2024), Tanger, Morocco
PhD Qualifying Examination
Presentation at HESL, SCSE, Nanyang Technological University, Singapore
Teaching
Service
- Event and Community Engagement
- Member, TEDxNTU （2023）
- Volunteer, The ACM Web Conference (2024)
- Member, NTU Graduate Students Association (NTUGSA) (2023–2025)
- Member, SWE@NTU （2025）
- Peer Review Service
- Reviewer for ACM Transactions on Quantum Computing
- Reviewer for Archives of Computational Methods in Engineering
- Reviewer for EPJ Quantum Technology
- Reviewer for Quantum Information Processing