The Quantum Lab at IIIT-Delhi.

BraQIIIT is a research group led by Dr. Debajyoti Bera at the Computer Science department of Indraprastha Institute of Information Technology, Delhi (IIIT-Delhi). Broad research interests of this group include quantum query complexity, quantum circuit complexity, and quantum algorithms for cryptography, machine learning and optimization.

Our Team


Doctoral Students

Sagnik Chatterjee

Quantum Learning Theory

Tharrmashastha SAPV

Quantum Algorithms & Query Complexity

Student Interns


  • Efficient Quantum Agnostic Improper Learning of Decision Trees. D. Bera and S. Chatterjee. arXiv preprint arXiv:2210.00212(2022)
  • Quantum Boosting using Domain-Partitioning Hypotheses. D. Bera and S. Chatterjee. QTML 2022. arXiv preprint arXiv:2110.12793(2021).
  • HighDist Framework: Algorithms and Applications. D. Bera, and Tharrmashastha SAPV. arXiv preprint arXiv:2103.09033(2021).
  • Quantum and Randomised Algorithms for Non-linearity Estimation. D. Bera and Tharrmashastha SAPV. ACM Transactions on Quantum Computing (2021).
  • Applying the Quantum Alternating Operator Ansatz to the Graph Matching Problem. D. Bera and S. Chatterjee. AQIS 2020. arXiv:2011.11918
  • Error reduction of quantum algorithms. D. Bera and Tharrmashastha SAPV. Physical Review A 100.012331 (2019).
  • Efficient quantum algorithms related to autocorrelation spectrum. D. Bera, S. Maitra, and Tharrmashastha SAPV. In International Conference on Cryptology in India (INDOCRYPT 2019).
  • Amplitude amplification for operator identification and randomized classes. D. Bera. In International Computing and Combinatorics Conference (COCOON 2018).
  • Detection and Diagnosis of Single Faults in Quantum Circuits. D. Bera. In IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, vol. 37, no. 3. (2018)


Useful Resources

Online Resources

Text Books


Lab B-513,
Research and Development Building,
Indraprastha Institute of Information Technology - Delhi,
Okhla Industrial Area Phase III, New Delhi - 110020.

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