The Group
People
The Quantum Optomechanics group at IIT (ISM) Dhanbad is forming. We work across cavity optomechanics, superfluid ⁴He, analogue gravity, peripheral superconducting quantum technologies, and precision sensing — bringing together experimentalists, theorists, and engineers.
A young lab, building from millikelvin upward
The group brings expertise in low-temperature physics, microwave measurement, nanofabrication, and superfluid helium — and is recruiting motivated PhD and Master's students, as well as postdoctoral researchers, with backgrounds in physics, electrical engineering, or applied physics.
We collaborate closely with international partners at Royal Holloway, Institut Néel (CNRS), and the gravitational wave detection community, and maintain ties to industry through our spin-out enthrophy.com.
Principal Investigator
PI · Assistant Professor
Sumit Kumar
Experimental physicist working on cavity optomechanics, superfluid ⁴He, MEMS/NEMS, and gravitational wave detection. Joined IIT (ISM) Dhanbad as Assistant Professor in July 2025.
2021 — 2025
Postdoctoral Researcher · Royal Holloway, University of London
2017 — 2021
PhD · Institut Néel, CNRS / Université Grenoble Alpes
2015 — 2017
M.Tech · Centre for Nanoscience and Engineering, IISc Bengaluru
2010 — 2014
B.Tech · Engineering Physics, IIT Delhi
Postdoctoral Researchers
Open Position
Postdoctoral researcher
Sought: experimental background in microwave measurement, dilution refrigerators, or superfluid ⁴He. Funded position contingent on grant.
PhD Students
Open Position
PhD position · Superfluid optomechanics
Experimental project on cavity optomechanics with superfluid ⁴He at millikelvin temperatures.
Open Position
PhD position · HF gravitational waves
Detector development for high-frequency gravitational waves using superfluid ⁴He in microwave re-entrant cavities.
Open Position
PhD position · Theory / Simulation
Theoretical work on optomechanical dynamics, non-linear resonators, and analogue cosmology with third-sound systems.
Master's & M.Tech. Students
Open Position
M.Tech. project
Project topics span superconducting circuit design, microwave resonator fabrication, cryogenic instrumentation, and Python-based experiment automation.
Alumni
The lab is newly formed — alumni listings will appear here as students and researchers complete their work with the group.
External Collaborators
Dr. Xavier Rojas
Royal Holloway, University of London
Superfluid ⁴He cavity optomechanics, fourth-sound resonators in phononic crystals, and HF gravitational wave detection in re-entrant geometries.
Dr. Andrew Fefferman
Institut Néel, CNRS, Grenoble
Low-temperature microwave optomechanics with Si₃N₄ strings and aluminium drumheads; cryogenic instrumentation for dilution refrigerators.
Dr. Eddy Collin
Institut Néel, CNRS, Grenoble
Quantum ground-state cooling of macroscopic mechanical objects; non-linear coupling in microwave optomechanics.
enthrophy.com
Spin-out · Industry partner
Translating laboratory-grade precision sensing into deployable instruments.
enthrophy.com →
Join the lab
We are recruiting at every level — PhD, Master's, postdoctoral. Strong candidates from physics, electrical engineering, and applied physics with interests in quantum measurement, low-temperature physics, microwave engineering, or theory are encouraged to get in touch.
Send an enquiry →