About Me

I am currently doing a PhD at IRIF, Université de Paris under the supervision of Frédéric Magniez. Previously I studied at École polytechnique, at Télécom ParisTech and at Parisian Master of Research in Computer Science (MPRI).

Curriculum Vitæ

You can download my CV here.

Research Interests

I mainly study quantum algorithms in the context of cryptanalysis. I am particularly interested in problems related to lattice-based cryptography.

Publications

1. Improved (Provable) Algorithms for the Shortest Vector Problem via Bounded Distance Decoding
   Divesh Aggarwal, Yanlin Chen, Rajendra Kumar, Yixin Shen
   38th International Symposium on Theoretical Aspects of Computer Science (STACS 2021) [arXiv]

2. Fast Classical and Quantum Algorithms for Online k-server Problem on Trees
   Ruslan Kapralov, Kamil Khadiev, Joshua Mokut, Yixin Shen, Maxim Yagafarov
   Preprint (2020). [arXiv]

3. Improved Classical and Quantum Algorithms for Subset-Sum
   Xavier Bonnetain, Rémi Bricout, André Schrottenloher, Yixin Shen
   Advances in Cryptology - ASIACRYPT 2020 - 26th International Conference on the Theory and Application of Cryptology and Information Security
   [PDF] [arXiv]

4. Quantum Query Complexity of Dyck Languages with Bounded Height
   Kamil Khadiev, Yixin Shen
   Preprint (2019). [arXiv]

   Merged with Quantum Lower Bounds for 2D-Grid and Dyck Language
   Andris Ambainis, Kaspars Balodis, Jānis Iraids, Krišjānis Prūsis, Juris Smotrovs [arXiv]

   Merged version: Quantum Lower and Upper Bounds for 2D-Grid and Dyck Language [PDF] 45th International Symposium on Mathematical Foundations of Computer Science (MFCS 2020)
   

5. Quantum lattice enumeration and tweaking discrete pruning
   Yoshinori Aono, Phong Nguyen, Yixin Shen
   Advances in Cryptology - ASIACRYPT 2018 - 24th International Conference on the Theory and Application of Cryptology and Information Security
   [PDF] [eprint]

Teaching Assistant

• Advanced Object-Oriented Programming, Licence 3, Fall 2019, Instructor: Aldric Degorre.
• Object-oriented Programming and User Interfaces, Licence 2, Fall 2017-2018, Instructor: Cristina Sirangelo.
• Introduction to Java Programming, Licence 1, Falls 2017-2018-2019, Instructors: Arnaud Sangnier.

Reviews

I have been a subreviewer for: TQC 2019, ANTS 2020, SODA 2021, ICALP 2021, CRYPTO 2021.