Research
PhD research
Near-field control of 2D materials with nano-plasmonics
Supervisor: Prof. Mohammad Hafezi, JQI, University of Maryland, USA
Publication: Supratik Sarkar*, Mahmoud Jalali Mehrabad*, Daniel G. Suárez-Forero*, Liuxin Gu*, Christopher J. Flower, Lida Xu, Kenji Watanabe, Takashi Taniguchi, Suji Park, Houk Jang, You Zhou, Mohammad Hafezi. Sub-wavelength optical lattice in 2D materials. arXiv:2406.00464 (2024). (*authors contributed equally)
Studying a hybrid Bose-Fermi Mott insulating state in moiré heterostructures
Supervisor: Prof. Mohammad Hafezi, JQI, University of Maryland, USA
Publication: Beini Gao*, Daniel G. Suárez-Forero*, Supratik Sarkar*, Tsung-Sheng Huang, Deric Session, Mahmoud Jalali Mehrabad, Ruihao Ni, Ming Xie, Pranshoo Upadhyay, Jonathan Vannucci, Sunil Mittal, Kenji Watanabe, Takashi Taniguchi, Atac Imamoglu, You Zhou, Mohammad Hafezi. Excitonic Mott insulator in a Bose-Fermi-Hubbard system of moiré WS2/WSe2 heterobilayer. Nat Commun 15, 2305 (2024). (*authors contributed equally)
Chiral Optical Nano-Cavity with Atomically Thin Mirrors
Supervisor: Prof. Mohammad Hafezi, JQI, University of Maryland, USA
Publication: Daniel G. Suárez-Forero*, Ruihao Ni*, Supratik Sarkar*, Mahmoud Jalali Mehrabad*, Erik Mechtel, Valery Simonyan, Andrey Grankin, Kenji Watanabe, Takashi Taniguchi, Suji Park, Houk Jang, Mohammad Hafezi, You Zhou. Chiral Optical Nano-Cavity with Atomically Thin Mirrors. arXiv: 2308.04574 (2023). (*authors contributed equally)
Optically probing strongly correlated electronic states
Supervisor: Prof. Mohammad Hafezi, JQI, University of Maryland, USA
Brief description: We aim to optically study exotic excitonic and correlated electronic states in systems with significant on-site Hubbard interactions, like twisted bilayer Transition Metal Dichalcogenides (TMDs), high Tc superconductors, etc. We are interested in exploring quantum Hall physics, and many-body physics in these materials.
Masters research
Deterministic single photon subtraction using SPRINT in a three-level emitter for engineering exotic non-classical states of light
Supervisor: Prof. Michal Bajcsy, IQC, University of Waterloo, Canada
Brief description: We perform analytical and numerical analysis of deterministic single photon subtraction from any arbitrary state of light using single photon Raman interaction (SPRINT) in a single quantum emitter coupled with a chiral waveguide or a bi-modal cavity. We also investigate the performance of recently reported emitter-waveguide systems as a photon subtractor for different types of input light. Furthermore, we studied how this mechanism can be used to engineer non-classical exotic quantum states that have applications in quantum information theory.
Designing optical antennas with Inverse Design for enhanced directional emission of radiation from NV centers
Supervisor: Prof. Michal Bajcsy, IQC, University of Waterloo, Canada
Brief description: We employed adjoint optimization and inverse design techniques to design diamond nanophotonic devices that help in directional emission of radiation from nitrogen vacancy centers in diamonds. Our design gives us a higher collection efficiency compared to existing techniques.
Designing and fabricating photonic crystal mirrors for making cavities inside hollow-core fibers
Supervisor: Prof. Michal Bajcsy, IQC, University of Waterloo, Canada
Brief description: We designed and fabricated photonic crystal mirrors for making fiber-integrated Xe laser operating in the ultraviolet (UV) region when exposed to RF discharge. I have been associated with fabricating the photonic crystal membranes.
Undergraduate research
Undergraduate Final Year Project: Tunneling in Graphene SymFETs
Supervisor: Prof. Chayanika Bose, Jadavpur University, India
Report: Supratik Sarkar, and Samrat Sarkar, Tunneling in Graphene SymFETs, arXiv: 1805.09659 (2018).
Single Photon Subtraction from Continuous Variable Cluster States
Supervisor: Prof. Nicolas Treps, LKB (CNRS, ENS, UPMC-Sorbonne), France
Publication: Mattia Walschaers, Supratik Sarkar, Valentina Parigi, and Nicolas Treps. Tailoring Non-Gaussian Continuous-Variable Graph States. Physical Review Letters 121, 220501, doi: 10.1103/physrevlett.121.220501 (2018).
Influence of Polarization and Self-polarization Charges on Impurity Binding Energy in Spherical Quantum Dot with Parabolic Confinement
Supervisor: Prof. Chayanika Bose, Jadavpur University, India
Publication: Supratik Sarkar, Samrat Sarkar, and Chayanika Bose. Influence of polarization and self-polarization charges on impurity binding energy in spherical quantum dot with parabolic confinement. Physica B: Condensed Matter, 541, 75-78, doi: 10.1016/j.physb.2018.04.035 (2018).
Detection of Celiac Disease from Endoscopy Images Using Convolutional Neural Networks
Supervisor: Prof. Debdoot Sheet, Indian Institute of Technology (IIT) Kharagpur, India
True Random Number Generators
Supervisor: Prof. Subhamoy Maitra, Indian Statistical Institute (ISI) Kolkata, India