Department of Physics, Indian Institute of Technology Bombay, Mumbai, India
ToPP Group
Topological Photonics and Polaritonics Group
Principal Investigator
Subhaskar Mandal
Assistant Professor, 2025 - Present
Postdoc, NTU Singapore, 2021 - 2024
PhD in Physics, NTU Singapore, 2016 - 2020
MSc in Physics, IIT Bombay, 2014 - 2016
BSc in Physics, Scottish Church College, University of Calcutta, 2011 - 2014
Phone: (+91) 22 2576 7586
Email: subhaskar@iitb.ac.in
Office: 329B, 3rd Floor, Physics Department
PhD Students
Mousam Dey
PhD Student, August 2025 - Present
Research Topic: Novel Topological Phases in Photonics
MSc in Physics, NIT Trichy, 2022 - 2024
BSc in Physics, Vidyasagar University, 2018 - 2021
Email: 24d1073@iitb.ac.in
Hometown: Haldia, West Bengal
Neha Bhoria
PhD Student, August 2025 - Present
Research Topic: Applications of Topological Photonics
MSc in Physics, Jawaharlal Nehru University (JNU), Delhi, 2023 - 2025
BSc in Physics, Miranda House College, University of Delhi, 2020 - 2023
Email: 25d1060@iitb.ac.in
Hometown: Sonipat, Haryana
Prem Kumar Mourya
PhD Student, August 2025 - Present
Research Topic: Exciton-Polaritonic Devices
MSc in Physics, Jawaharlal Nehru University (JNU), Delhi, 2023 - 2025
BSc in Physics, Kirori Mal College, University of Delhi, 2020 - 2023
Email: 25d1057@iitb.ac.in
Hometown: Gonda, Uttar Pradesh
Abhijit Das
PhD Student, January 2026 - Present
Research Topic: Nanophotonics
MSc in Physics, Gauhati University, Assam, 2021 - 2023
BSc in Physics, Assam University, Assam, 2017 - 2020
Email: abhijit.001@iitb.ac.in
Hometown: Silchar, Assam
Postdocs
Dheerendra Singh
Institute Postdoctoral Fellow, July 2025 - Present
Research Topic: Machine Learning in Optics and Photonics
Int-PhD (MS+PhD) in Physics, IISER Kolkata, 2017 - 2025
BSc in Physics and Mathematics, Bundelkhand University, Jhansi, 2014 - 2017
Email: ds.phy@iitb.ac.in
Hometown: Orai, Uttar Pradesh
Deep Mondal
Institute Postdoctoral Fellow, September 2025 - Present
Research Topic: Microwave Topological Photonics
PhD in Physics, University of Calcutta, 2021 - 2025
MSc in Physics, RKMRC Narendrapur, University of Calcutta, 2016 - 2018
BSc in Physics, Dinabandhu Andrews College, University of Calcutta, 2013 - 2016
Email: 20004571@iitb.ac.in
Hometown: Kolkata, West Bengal
Interns
Ghanshyam Purohit
IITB Internship Program, January 2026 - Present
Research Topic: Non-Hermitian topological photonics
Msc in Physics, Central University of Haryana, Mahendragarh, Haryana, 2024 - Present
BSc in PCM, Maharaja Ganga Singh University, Bikaner, Rajsthan, 2019 - 2022
Email: ghanshyam05022002@gmail.com
Hometown: Sujangarh, Rajasthan
Project Students
Sandipan Biswas
IITB MSc Physics, January 2026 - Present
Research Topic: Interaction driven topological photonics
BSc in Physics, Malda College, 2013 - 2016
Email: 24n0317@iitb.ac.in
Hometown: Malda, West Bengal