my group

Felix Leditzky

Principal investigator, Department of Mathematics

Research interests: Quantum information theory, in particular quantum Shannon theory and mathematical methods

Contact: email

Jacob Beckey

NSF Mathematical Sciences Postdoctoral Research Fellow (Department of Mathematics)

Research interests: Quantum information theory, entanglement theory, learning theory
Contact: email | homepage

Recent papers

1. Tight Universal Bounds on Quantum Data Hiding with Multipartite Werner States. Akresh, Oren and Beckey, Jacob and Leditzky, Felix. arXiv preprint, 2026. arXiv
2. Product testing with single-copy measurements. Beckey, Jacob and Coffman, Luke and Shlosberg, Ariel and Schatzki, Louis and Leditzky, Felix. arXiv preprint, 2025. arXiv
3. Localizing entanglement in high-dimensional states. Vairogs, Christopher and Chablani, Akanksha and Lee, Leo and Sha, Hanyang and Vaughan-Lee, Abigail and Beckey, Jacob. arXiv preprint, 2025. arXiv

Theshani Nuradha

J.L. Doob Research Assistant Professor (Department of Mathematics)

Research interests: Classical and Quantum Information Theory, Privacy, Statistical Learning
Contact: email | homepage

Recent papers

1. High quantum local differential privacy breaks entanglement. Bhalerao, Sujeet and Nuradha, Theshani and Leditzky, Felix. arXiv preprint, 2026. arXiv
2. Privacy-Utility Tradeoffs in Quantum Information Processing. Nuradha, Theshani and Bhalerao, Sujeet and Leditzky, Felix. arXiv preprint, 2026. arXiv
3. Quantum Doeblin Coefficients: Interpretations and Applications. George, Ian and Hirche, Christoph and Nuradha, Theshani and Wilde, Mark M.. Quantum, 2026. arXiv Journal
4. Dual variational quantum eigensolver: A quantum algorithm to lower bound the ground-state energy. Westerheim, Hanna and Chen, Jingxuan and Holmes, Zoë and Luo, Ivy and Nuradha, Theshani and Patel, Dhrumil and Rethinasamy, Soorya and Wang, Kathie and Wilde, Mark M.. Physical Review A, 2026. arXiv Journal
5. High quantum local differential privacy breaks entanglement. Bhalerao, Sujeet and Nuradha, Theshani and Leditzky, Felix. 2026. arXiv
6. Conditional contraction coefficients and their applications to quantum networks. Hirche, Christoph and George, Ian and Nuradha, Theshani and Wilde, Mark M.. 2026. arXiv
7. Privacy-Utility Tradeoffs in Quantum Information Processing. Nuradha, Theshani and Bhalerao, Sujeet and Leditzky, Felix. 2026. arXiv
8. Auditing Hybrid Quantum Machine Unlearning for Membership Attacks. Manuguri, Abhiram and Mittal, Tanish and Nuradha, Theshani. 2026.
9. Architectural Robustness to Label Noise Using Variational Quantum Circuits for Medical Image Classification. Epa, Yasoda Lasiru Ariyarathna and Epa, Yaseema Rusiru Ariyarathna and Liyanaarachchi, Sandaru and Jayathissa, Kavindu and Abeywardena, Kalana G. and Wickremasinghe, Kithmin and Nuradha, Theshani and Edussooriya, Chamira U. S.. 2026. arXiv
10. Information Contraction under (\varepsilon,δ)-Differentially Private Mechanisms. Nuradha, Theshani and George, Ian and Hirche, Christoph. 2026. arXiv

Sujeet Bhalerao

Graduate student (Department of Mathematics)

Research interests: Quantum information theory, quantum channels, representation theory
Contact: email | homepage

Recent papers

1. High quantum local differential privacy breaks entanglement. Bhalerao, Sujeet and Nuradha, Theshani and Leditzky, Felix. arXiv preprint, 2026. arXiv
2. Improving quantum communication rates with permutation-invariant codes. Bhalerao, Sujeet and Leditzky, Felix. IEEE Transactions on Information Theory, 2026. arXiv Journal
3. A depolarizing choir sings in Gaussian harmony. Ahmed, Rabsan Galib and Bhalerao, Sujeet and Lee, Sungjai and Leditzky, Felix and Leung, Debbie and Schaeffer, Luke and Smith, Graeme. arXiv preprint, 2026. arXiv
4. Privacy-Utility Tradeoffs in Quantum Information Processing. Nuradha, Theshani and Bhalerao, Sujeet and Leditzky, Felix. arXiv preprint, 2026. arXiv
5. Stiefel-Whitney classes for symmetric groups. Bhalerao, Sujeet and Ganguly, Jyotirmoy and Spallone, Steven. arXiv preprint, 2026. arXiv
6. QEDBENCH: Quantifying the Alignment Gap in Automated Evaluation of University-Level Mathematical Proofs. Gonzalez, Santiago and Bavandpour, Alireza Amiri and Ye, Peter and Zhang, Edward and Aleksejevs, Ruslans and Antić, Todor and Baron, Polina and Bhalerao, Sujeet and Bhattacharya, Shubhrajit and Burton, Zachary and Byrne, John and Choi, Hyungjun and Disha, Nujhat Ahmed and Encz, Koppány István and Fang, Yuchen and George, Robert Joseph and Ghorbani, Ebrahim and Goldfarb, Alan and Guo, Jing and Gupta, Meghal and Huber, Stefano and Kanckos, Annika and Kang, Minjung and Kim, Hyun Jong and Lorenzini, Dino and Lorenzo, Levi and Mao, Tianyi and Marzenta, Giovanni and Masuda, Ariane M. and Mauth, Lukas and Mickovic, Ana and Miniguano-Trujillo, Andrés and Moulin, Antoine and Ni, Wenqi and Parry, Tomos and Ren, Kevin and Roodbarani, Hossein and Rundström, Mathieu and Saikia, Manjil and Samart, Detchat and Steiner, Rebecca and Stewart, Connor and Thakkar, Dhara and Tse, Jeffrey and Velona, Vasiliki and Xiang, Yunhai and Yalçın, Sibel and Yan, Jun and Zeng, Ji and Cohan, Arman and Liu, Quanquan C.. 2026. arXiv
7. High quantum local differential privacy breaks entanglement. Bhalerao, Sujeet and Nuradha, Theshani and Leditzky, Felix. 2026. arXiv
8. Privacy-Utility Tradeoffs in Quantum Information Processing. Nuradha, Theshani and Bhalerao, Sujeet and Leditzky, Felix. 2026. arXiv
9. Stiefel-Whitney classes of representations of dihedral groups. Bhalerao, Sujeet and Joshi, Rohit and Malik, Neha. Communications in Algebra, 2025. arXiv Journal

Mayank Bhatia

Graduate student (Department of Mathematics)

Research interests: Variational quantum optimization, teleportation protocols
Contact: email | homepage

Recent papers

1. In Silico Benchmarking of Detectable Byzantine Agreement in Noisy Quantum Networks. Bhatia, Mayank and Doshi, Shaan and Winton, Daniel and Doolittle, Brian and Abreu, Bruno and Núñez-Corrales, Santiago. arXiv preprint, 2025. arXiv

Haneul (Chloe) Kim

Graduate student (Department of Electrical and Computer Engineering)
jointly advised with Eric Chitambar

Research interests: Quantum information theory, quantum channels, entanglement theory
Contact: email

Recent papers

1. Compatibility of quantum instruments. Kim, Chloe and Zhang, Yujie and Chitambar, Eric and Junge, Marius and Leditzky, Felix. arXiv preprint, 2026. arXiv
2. A resource theory of asynchronous quantum information processing. Kim, Chloe and Chitambar, Eric and Leditzky, Felix. New Journal of Physics, 2026. arXiv Journal
3. Process-optimized phase-covariant quantum cloning. Kim, Chloe and Chitambar, Eric. Physical Review A, 2022. arXiv Journal
4. Quantum Secret Sharing and Tripartite Information. Junge, Marius and Kim, Chloe and Liu, Guangkuo and Wu, Peixue. arXiv preprint, 2020. arXiv

Christopher Vairogs

Graduate student (Department of Physics)

Research interests: Quantum information theory, entanglement theory, unitary designs
Contact: email

Recent papers

1. Randomness of exact unitary designs under symmetry. Vairogs, Christopher and Leditzky, Felix. arXiv preprint, 2026. arXiv
2. Localizing multipartite entanglement with local and global measurements. Vairogs, Christopher and Hermes, Samihr and Leditzky, Felix. Quantum, 2026. arXiv Journal
3. Extracting randomness from magic quantum states. Vairogs, Christopher and Yan, Bin. Phys. Rev. Res., 2025. arXiv Journal
4. Localizing entanglement in high-dimensional states. Vairogs, Christopher and Chablani, Akanksha and Lee, Leo and Sha, Hanyang and Vaughan-Lee, Abigail and Beckey, Jacob. arXiv preprint, 2025. arXiv
5. Direct Fidelity Estimation for Generic Quantum States. Vairogs, Christopher and Yan, Bin. arXiv preprint, 2024. arXiv
6. Quantum state discrimination circuits inspired by Deutschian closed timelike curves. Vairogs, Christopher and Katariya, Vishal and Wilde, Mark M.. Physical Review A, 2022. arXiv Journal

Juntai (Stephen) Zhou

Graduate student (Department of Mathematics)

Research interests: Quantum information theory, representation theory, entanglement theory
Contact: email

Recent papers

1. A mixing time method for estimating the sample complexity of quantum state discrimination. Zhou, Juntai and Leditzky, Felix. arXiv preprint, 2026. arXiv
2. From Majorization to Horn and Unitary-Orbit Inequalities. Zhou, Juntai. arXiv preprint, 2026. arXiv
3. On the sample complexity of the generalized hidden shift problem over arbitrary finite groups. Zhou, Juntai. arXiv preprint, 2026. arXiv
4. Probing the Critical Point (CritPt) of AI Reasoning: a Frontier Physics Research Benchmark. Zhu, Minhui and Tian, Minyang and Yang, Xiaocheng and Zhou, Tianci and Yuan, Lifan and Zhu, Penghao and Chertkov, Eli and Liu, Shengyan and Du, Yufeng and Ji, Ziming and Das, Indranil and Chen, Qingzhi and Cao, Junyi and Du, Yufeng and Yu, Jiabin and Wu, Peixue and He, Jinchen and Su, Yifan and Jiang, Yikun and Zhang, Yujie and Liu, Chang and Huang, Ze-Min and Jia, Weizhen and Wang, Yunkai and Jafarpour, Farshid and Zhao, Yong and Chen, Xinan and Shelton, Jessie and Young, Aaron W. and Bartolotta, John and Xu, Wenchao and Sun, Yue and Chu, Anjun and Colussi, Victor and Akers, Chris and Brooks, Nathan and Fu, Wenbo and Zhao, Jinchao and Qi, Marvin and Mu, Anqi and Yang, Yubo and Zang, Allen and Lyu, Yang and Mai, Peizhi and Wilson, Christopher and Guo, Xuefei and Zhou, Juntai and Inafuku, Daniel and Xue, Chi and Gao, Luyu and Yang, Ze and Hein, Yaïr and Kahn, Yonatan and Zhou, Kevin and Luo, Di and Wilson, John Drew and Reilly, Jarrod T. and Bandak, Dmytro and Press, Ofir and Yang, Liang and Wang, Xueying and Tong, Hao and Chia, Nicolas and Huerta, Eliu and Peng, Hao. arXiv preprint, 2026. arXiv
5. On the distinguishability of geometrically uniform quantum states. Zhou, Juntai and Chessa, Stefano and Chitambar, Eric and Leditzky, Felix. Journal of Physics A: Mathematical and Theoretical, 2025. arXiv Journal

Group alumni

• Yulie Arad, undergraduate and Master’s student 2023-2025, now taking a gap year
• Sungjai Lee, undergraduate student 2024-25, now a Master’s student at University of Waterloo
• Stefano Chessa, postdoc 2022-24, now a scientist at the NATO STO Centre for Maritime Research and Experimentation
• Mason Camp, undergraduate student 2022, now a PhD student at University of Maryland