Avatar Tulsi / Tathagat
Assistant Professor
Avatar Tulsi joined GDMM in 2025 as an Assistant Professor. He worked as an Assistant Professor at IIT Bombay from 2010 to 2019. He did PhD from IISc Bengaluru in 2009. During PhD, he was mentored in 2005 at Bell Labs, USA by world-famous scientist Dr. Lov Grover. He finished M.Sc in 1999 at the age of 11 years from Patna University which makes him the world's youngest postgraduate. One of his single-author research papers has been classified as an extremely highly cited research paper.
About Avatar Tulsi / Tathagat
The academic journey of Avatar Tulsi started as a child prodigy. He finished Class X, B.Sc, and M.Sc at the age of nine, ten, and eleven years respectively during 1997-99. For this, the minimum age, minimum attendance and other related academic rules were kindly relaxed for him. For Class X, these relaxations were by Hon'ble Lieutenant Governor of New Delhi, Hon'ble Education Minister of India, and Hon'ble Delhi High Court. For B.Sc and M.Sc, these relaxations were by Hon'ble Governor of Bihar and Hon'ble Patna High Court. Leading media organizations have prominently reported his achievements as a child prodigy. He is certified by the Guinness Book of World Records as the world's youngest postgraduate. He got National Child Award for exceptional achievement in the field of education in 1999.
Avatar Tulsi did PhD in Quantum Computing Theory from Indian Institute of Science (IISc) Bengaluru in 2009. During PhD, he was mentored in 2005 for six months at Bell Labs, USA by world-famous scientist Dr. Lov Grover, the inventor of Quantum Search Algorithm. He worked as an Assistant Professor at Indian Institute of Technology (IIT) Bombay from 2010 to 2019. For health reasons, he could not continue at IIT Bombay as Mumbai climate was not suitable for him. He has published ten research papers. One of his single-author papers (entitled Faster quantum walk algorithm for the two dimensional spatial search) has been classified as an extremely highly cited research paper by Dimensions.
- Ph.D in Physics from Indian Institute of Science, Bengaluru in 2009
- M.Sc. in Physics from Patna University in 1999
- B.Sc. in Physics from Patna Science College in 1998
- Quantum Computing Theory
- Quantum Computation and Information, Elective Course for B.Tech third and fourth year students at IIT Bombay. Jan-April semester of 2012 and 2013
- Classical Mechanics, Core Course for M.Sc Physics Students at IIT Bombay. August-November semester of 2011, 2012, and 2013.
- Continuum Mechanics, Elective Course for B.Tech students at IIT Bombay. Jan-April semester of 2011.
- Theory of Quantum Algorithms
- A. SIGNIFICANT PUBLICATIONS (Listed in the order of significance)
- 1. Faster quantum walk algorithm for the two dimensional spatial search, Author(s): Avatar Tulsi, Reference: Physical Review A 78, 012310 (2008), Citations: 158 (Dimensions), 241 (Google Scholar), Remarks: According to Dimensions, this publication is extremely highly cited compared to other publications in the same field and has received thirty three times more citations than average.
- 2. A New Algorithm for Fixed-Point Quantum Search, Author(s): Tathagat Tulsi, Lov Grover and Apoorva Patel, Reference: Quantum Information and Computation, 6, 483-494 (2006), Citations: 69 (Google Scholar)
- 3. Robust Quantum Spatial Search, Author(s): Avatar Tulsi, Reference: Quantum Information Processing 15, 2675-2683 (2016), Remarks: This is the second paper of Letter Series of this journal started in 2016 to publish most timely and highly qualified work.
- B. OTHER PUBLICATIONS (Listed chronologically with the most recent first)
- 1. Phase Estimation using an approximate eigenstate, Author(s): Avatar Tulsi, Reference: Quantum Information and Computation, 16, 0803-0812 (2016).
- 2. Postprocessing for speeding up general quantum search algorithms, Author(s): Avatar Tulsi, Reference: Physical Review A, 92, 022353 (2015).
- 3. Quantum search algorithm tailored to clause-satisfaction problems, Author(s): Avatar Tulsi, Reference: Physical Review A, 91, 052322 (2015).
- 4. Faster quantum searching with almost any diffusion operator, Author(s): Avatar Tulsi, Reference: Physical Review A, 91, 052307 (2015).
- 5. General framework for quantum search algorithms, Author(s): Avatar Tulsi, Reference: Physical Review A, 86, 042331 (2012).
- 6. Adiabatic quantum computation with a one-dimensional projector Hamiltonian, Author(s): Avatar Tulsi, Reference: Physical Review A, 80, 052328 (2009).
- 7. Quantum Computers can search rapidly by using almost any selective transformation, Author(s): Avatar Tulsi, Reference: Physical Review A, 78, 022332 (2008).
- C. MANUSCRIPTS COMMUNICATED
- 1. Avatar Tulsi, Sandwich test for Quantum Phase Estimation, arXiv: 2507.23716
- 2. Avatar Tulsi, Universal Quantum Algorithm, arXiv: 1611.03472 (2016).
- 3. Avatar Tulsi, Success criteria for quantum search on graphs, arXiv: 1605.05013 (2016).
- 4. Avatar Tulsi, On the class of diffusion operators for fast quantum search, arXiv: 1610.05661 (2016).
- 5. Avatar Tulsi, A simpler algorithm to mark the unknown eigenstates, arXiv: 1611.02680 (2016).
- Selected for Three-years Post-Doctoral Research Fellowship by Institute of Quantum Computing, University of Waterloo,Canada in 2009.
- National Child Award for Exceptional Achievement in the field of Education for the year 1997. Awarded on 15.04.99. This award is now called PradhanMantri Rashtriya Bal Puruskar
- IT Cell Coordinator, GDMM, since July 2026
- Attended Workshop on Quantum Computing at ICTP, Italy in 2006
- Poster on "Fixed-Point Quantum Search" presented at US Army Research Conference, Florida, USA, 2005
- Attended Physics Nobel Prize Winners' Meeting in Germany in 2001
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