Research Experience
Theoretical Condensed Matter Physics
University of Dhaka
2018
I completed my M.Sc. thesis during the 2017–2018 academic year under the supervision of Professor Dr. Golam Mohammad Bhuiyan in the Department of Theoretical Physics at the University of Dhaka. My M.S. thesis was titled Theory of Melting Point for Three FCC Elements: Al, Cu, Ni. The objective was to examine whether the Bretonnet-Silbert model potential can be used to determine the structure of fcc solids. The application of this potential is successful in several liquid alloy systems such as AgxIn1-x, CuxAu1-x, etc. I used Fortran and Bash Script for the numerical simulation to compute the pseudopotential. My approach was to find the melting point of metals from the free energies of the solid and liquid phases.
Quantum Optics
University of Tennessee, Knoxville
2021-2022
I started my Ph.D. research on Quantum Information, Communication & Networking in late 2021, under the supervision of Professor George Siopsis, at the University of Tennessee, Knoxville. My first project was to study experimental HOM (Hong-Ou-Mandel) interference- using Weak Coherent Source (WCS). I spend time to get myself familiar with the experimental equipment, studying the theory behind WCS, Quantum Optics, Single Photon Detectors (SPD), Time Taggers, etc.
Quantum Cryptography: BB84
University of Tennessee, Knoxville
2022-2023
In 2023, I led my first experimental project, focusing on the application of Hong–Ou–Mandel (HOM) interference and quantum key distribution using the BB84 protocol. This work resulted in my first lead-author publication at IEEE Quantum Week 2023, titled “Experimental Free-Space Quantum Key Distribution over a Turbulent High-Loss Channel.”
By replacing single-photon avalanche diodes (SPADs) with superconducting nanowire single-photon detectors (SNSPDs), we significantly enhanced the system’s tolerance to atmospheric turbulence, extending the operational loss limit from approximately 17 dB to 40 dB.
🔗 DOI: 10.1109/QCE57702.2023.00133
Quantum Cryptography: MDI-QKD
University of Tennessee, Knoxville
2023-2024
Measurement-Device-Independent Quantum Key Distribution (MDI-QKD) is an advanced QKD protocol that eliminates detector-related vulnerabilities by introducing an untrusted third party, traditionally referred to as Charlie. In this project, we investigated whether the secret key rate could be enhanced through the use of superconducting nanowire single-photon detectors (SNSPDs). Encouraged by our previous success applying SNSPDs to the BB84 protocol, we extended a similar approach to the MDI-QKD framework. The paper was published in Physical Review A, in 2024.
🔗 DOI: 10.1103/PhysRevA.109.042603
Entangled Photon Source Optimaztion
University of Tennessee, Knoxville
2024-2025
A project to remove frequency entanglement from a Spontaneous Parametric Down Converted photons, while keeping the polarization entanglement by source engineering (simulation).
🔗 DOI: 10.1364/CLEO_AT.2024.JW2A.98
Mode Mismatch Effect on Multi-Photon Interference
University of Tennessee, Knoxville
2024-2025
An HOM visibility study when the incoming photons are not identical- distinguishable in spectrum and polarization, and the effect on practical cases, e.g.- Bell state measurement, Quantum Cryptography, Entanglement swapping, quantum sensing, photonic quantum computing, etc. (submitted to IOP, accepted)
🔗 DOI: 10.48550/arXiv.2501.14915
Quantum Clock Synchronization
University of Tennessee, Knoxville + Chattanooga
2024-2025
Sub-nanosecond clock synchronization using a quantum time-synchronization protocol. Led the experimental implementation on a real quantum network with atomic clocks, following theory and simulation published on arXiv. The theory and simulation link-
🔗 DOI: 10.1364/CLEO_AT.2024.JW2A.221
🔗 DOI: 10.48550/arXiv.2510.00199
Entangled State Distribution in Commercial Quantum Network
University of Tennessee, Chattanooga
2024-2025
Demonstrated multiphoton dual-state entanglement distribution over a metropolitan-scale commercial fiber network in Chattanooga. I developed a custom post-processing pipeline to extract quantum correlations from raw time-tagger data. The paper is submitted and under review in NPJ.
🔗 DOI: 10.48550/arXiv.2509.03701
Pico-Second level time synchronization using White Rabbit Switch
University of Tennessee, Chattanooga
2024-2025
We encorporated White Rabbit Switch (WRS), the state of art commercial time synchronization system to distribute entangled photons in two different quantum nodes and restore the g(2) correlation.
🌱 Submitted to CLEO, 2026
Sub-Nano Second time synchronization using Chip-Scale Atomic Clock
University of Tennessee, Chattanooga
2024-2025
We demonstrate a method to measure coincidences between polarization-entangled photons distributed to distant locations, eliminating traditional synchronization by employing a compact, chip-scale atomic clock for precise timing.
🌱 Submitted to CLEO, 2026
Quantum Networking Lab — University of Tennessee at Chattanooga
Summer 2024
- Fiber-based quantum network testbed development
- Time-correlation analysis across independent Rb clocks
- Multi-node synchronization experiments