Hi! I am a PhD student in the Department of Mathematics at Instituto Superior Técnico – Universidade de Lisboa, where I am very fortunate to be advised by Prof. João Ribeiro. My research focus is error-correcting codes for synchronization errors.

Previously, I worked as a Project Associate at the Indian Institute of Science (IISc), Bengaluru, under the supervision of Prof. P Vijay Kumar. During this time, my research focused on quantum error-correcting codes. Prior to that, I completed my B.Tech (Hons.) and MS by Research (Dual Degree) in Computer Science and Engineering from IIIT Hyderabad. I was working under Prof. Prasad Krishnan at SPCRC, IIIT Hyderabad. My research was primarily focused on developing novel cache-aided communication schemes for distributed data storage systems and content-delivery networks.

My research interests lie broadly in Coding Theory (both Classical and Quantum). I enjoy working on problems that are algebraic, algorithmic, or combinatorial in nature.

Details about my research work are available here. I (plan to) write up about things that I learn in my blog.

News & Updates

May 2026: Started my PhD under the supervision of Prof. João Ribeiro at Instituto Superior Técnico – Universidade de Lisboa. June 2025: Our paper An Improved Decimation Technique for Erasure Decoding of Quantum LDPC Codes got accepted at ITW, 2025. April 2025: Attended the school and workshop on HDXs and Codes at ICTS, Bengaluru. April 2025: Our paper On the Efficacy of the Peeling Decoder for the Quantum Expander Code got accepted at ISIT, 2025.

Old News ▼

September 2023: Our paper Cache-Aided Communication Schemes via Combinatorial Designs and their q-analogs got accepted for publication in IEEE Journal on Selected Areas in Information Theory (JSAIT), 2023. July 2023: Started working under Prof. P Vijay Kumar at IISc, Bengaluru. June 2023: Defended my Master's Thesis, titled "Low Complexity Cache-Aided Communication Schemes for Distributed Data Storage and Distributed Computing". [Slides] June 2023: Attended the JTG/IEEE ITSoc Summer School 2023 at IISc, Bengaluru. January 2023: Started working as a Teaching Assistant for the course Information-Theoretic Methods in Computer Science at IIIT-H. November 2022: Presented our paper Coded Data Rebalancing for Distributed Data Storage Systems with Cyclic Storage at ITW, 2022. [Slides] August 2022: My first paper Coded Data Rebalancing for Distributed Data Storage Systems with Cyclic Storage got accepted at ITW, 2022.

Research Experience

May 2026 – Present

Instituto de Telecomunicações, Lisboa
Researcher under Prof. João Ribeiro
Lisbon

• Error-correcting codes for synchronization errors

Jul 2023 – Sept 2025

Indian Institute of Science (IISc), Bengaluru
Project Associate under Prof. P Vijay Kumar
Bengaluru

• Quantum LDPC Codes
• GKP Codes

Jun 2022 – Jun 2023

Technical University of Munich
Research Intern under Dr. Rawad Bitar
Remote

• Codes for Distributed Storage
• Coding Theory for Blockchains

Aug 2020 – May 2023

Signal Processing and Communications Research Center, IIIT-H
Undergraduate Researcher and Research Assistant under Prof. Prasad Krishnan
Hyderabad

• Coded Caching
• Coded Data Rebalancing

Work Experience

Jan 2023 – May 2023
Feb 2022 – May 2022
Mar 2021 – May 2021

International Institute of Information Technology, Hyderabad (IIIT-H)
Teaching Assistant
Hyderabad

• Information-Theoretic Methods in Computer Science, Spring '23
• Introduction to Coding Theory, Spring '22
• Linear Algebra, Spring '21

Jun 2019 – Oct 2019

Hackerrank
Problem Setter
Remote

• Prepared various original programming and algorithmic problems along with strong testcases.

Education

May 2026 – Present

Instituto Superior Técnico – Universidade de Lisboa
PhD in Mathematics
Lisbon

• Advisor: Prof. João Ribeiro
• Research focus: Error-correcting codes for synchronization errors

Jul 2018 – Jun 2023

International Institute of Information Technology, Hyderabad (IIIT-H)
Bachelor of Technology (Honours) and Master of Science by Research in Computer Science and Engineering
Hyderabad

• Advisor: Prof. Prasad Krishnan
• Thesis Title: Low Complexity Cache-Aided Communication Schemes for Distributed Data Storage and Distributed Computing
• Specialization: Algorithms and Theory

© 2026 Abhinav Vaishya

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