Welcome to the Quantum Optics Theory group at the Indian Institute of Technology Madras. We are a new group based in the Department of Physics. Our primary research interests are in studying the physics of quantum hardware platforms and identifying opportunities for quantum technology applications such as quantum sensing and quantum simulation. We are also interested in exploring open quantum systems and dissipation engineering for controlling and manipulating quantum systems.
News and Events
August 2025: Please check out some recent preprints (currently under review) on the arXiv:
arXiv:2506.10151 "Lieb-Mattis states for robust entangled differential phase sensing"
arXiv:2506.14546 "Multilevel Electromagnetically Induced Transparency Cooling"
arXiv:2507.09298 "Impedance-Engineered Josephson Parametric Amplifier with Single-Step Lithography"
arXiv:2507.12429 "Adiabatic Cooling of Planar Motion in a Penning Trap Ion Crystal to Sub-Millikelvin Temperatures"
arXiv:2507.16741 "Parametric Amplification of Spin-Motion Coupling in Three-Dimensional Trapped-Ion Crystals"
IIT Madras is organizing the Quantum Symposium for Young Investigators (QSYI) 2025 on March 7 and 8, 2025. The symposium can be watched live on YouTube free of cost (Day 1 here and Day 2 here)
January 31, 2025: Our paper on "Scalable High-Dimensional Multipartite Entanglement with Trapped Ions" has been published in IOP Quantum Science and Technology!
January 6, 2025: Our paper titled "Quantum Synchronization and Dissipative Quantum Sensing" has been published in Physical Review A!
October 18, 2024: Athreya Shankar gave a talk titled "A BOAT to cross the Flatland River: Atomic Cat States beyond Qubits" at the Physics Department's In-house Symposium
September 18, 2024: Athreya Shankar gave a Department seminar on the group's recent work on preparing bilayer trapped ion crystals.
September 18, 2024: Our work on bilayer trapped ion crystals is highlighted on the home page of the Indian Institute of Science!
August 16, 2024: Our paper on "Bilayer Crystals of Trapped Ions for Quantum Information Processing" has now appeared in Physical Review X. JILA has published a writeup on our work and it is mirrored by several science news websites.
July 29, 2024: Our work on preparing high-dimensional Greenberger-Horne-Zeilinger states with atomic qudits is now out on the arXiv!
July 2024: We are born! The Quantum Optics Theory group @ IIT Madras starts off with two PhD students, Abhinay Pandey and Deep Datta, as its very first members!
Cover image credit: Steven Burrows (JILA)