Nepal Flag

Gyan Kumar Sah

"Believe in Power of Compounding" — Gyan
See my work in pictures → About Me ↓
Gyan Kumar Sah

Investigating and Improving Photoresponse in CdSe/Graphene Quantum Dot Hybrid System

Device Physics Lab · SRM University, AP View in Work Gallery ↗ 🏅 UG/PG SEED Grant
Read Full Paper →
  • Designed and built a custom multi-wavelength photodetector measurement setup (3D-printed holders, LabView automation, and Python script for LED Power calibration).
  • Characterised CdSe:GQD composites (2:1 and 3:1) under 375 nm, 530 nm, and 970 nm at two power densities (0.66 and 1 mW/cm²).
  • Extracted device figures of merit: Responsivity, Detectivity, EQE, and LDR.
  • Measured time response and modulation bandwidth.
LabVIEWMFLI Lock-inKeithley SMUThorlab LED DriverOMM-6810B Power MeterPython3D Printing

Industry Internship at Shakti Photon Solutions

Shakti Photon Solutions · Guntur, India — Paid Internship View in Work Gallery ↗
  • Designed different parts using Fusion 360 and manufactured them using CNC and 3D printer across materials like steel, graphite, acrylic, and PTFE/Teflon.
  • Fabricated MEAs using an ultrasonic spray nozzle and hot pressing.
  • Solely responsible for building an Arduino-based Hydrogen Leakage Detection System using an MQ-8 sensor with custom 3D-printed housing.
  • Assigned to design a 30 × 30 cm electrolyzer for a large industry order.
  • Delivered and set up the BOP of a Fuel Cell at IIT Delhi, and trained their staff on how to operate it.

Gained hands-on experience with engineering challenges, mechanical components (valves, gaskets, connectors), and industrial electrical systems. This experience directly fed into setting up the Cryogenic System for Low-Temperature Measurements.

Fusion 360CNC3D PrintingMEA FabricationArduinoPEM/AEMMQ-8 Sensor

Cryogenic System Setup for Low-Temperature Measurements

Low Temperature Physics Lab· SRM University, AP View in Work Gallery ↗

CNC-machined an aluminium connector to maintain 10⁻³ mbar pressure. Wrote LabVIEW programs interfacing a Keithley SMU and Temperature Controller to fully automate measurements at cryogenic temperatures. I learned about PID controller here.

CNCPIDCryogenicsVacuum Systems

Optically Controlled Ferromagnetic Thin Film

Exotic Interface Lab · SRM University, AP

Optimzed sputtering power such as base pressure and power to deposit 30 nm Cobalt on glass substrate with a masked Hall geometry. Performed anomalous Hall effect measurements with a Zurich MFLI lock-in amplifier but due to low magnetic field and noise we couldn't get anamolous hall effect behaviour. Hence, the project is discontinued.

SputteringHall EffectThin Films
"Whatever you vividly imagine, ardently desire, sincerely believe and enthusiastically act upon… must inevitably come to pass." — The Compound Effect, Darren Hardy

Lead — Aadigyan Winter Youth Program

IR Council · SRM University, AP
  • Selected to the IR Council Management Team through a written SOP and an interview.
  • Took the lead in organizing the Aadigyan Winter Youth Program — a four-day cross-border initiative.
  • Hosted 35+ students and teachers from Nepal, including school students.
  • Owned event management end to end — from planning through execution.
Event ManagementCross-Border ProgramTeam Coordination

School Captain (Full Captain) — Top Student Role

School Leadership
  • Held the school's highest student position (Full Captain).
  • Ran the daily assembly and anchored school events.
  • Directed 33+ sub-captains — chairing planning meetings and coordinating school-wide events.
  • Worked directly with the Principal for planning and reporting.
  • Elevated to this role after a strong year as Discipline In-charge.
Team LeadershipEvent PlanningPublic Speaking

School Discipline In-charge

School Leadership
  • First leadership role, responsible for maintaining discipline across a student body of 1,400+.
  • Reported directly to the Principal.
  • Performance here earned the promotion to School Captain the following year.
ResponsibilityDiscipline

Leadership is a skill I keep sharpening — much of it self-taught through the books on my Books shelf.

"It is not enough to have a good mind. The main thing is to use it well." — René Descartes

Shakti Photon Solutions — Company Website

Internship / Freelance Visit ↗
  • Designed and built the complete corporate website for Shakti Photon Solutions, a deep-tech startup building hydrogen electrolyzers, fuel cells, and CCUS hardware for India's net-zero transition.
  • Built a multi-page site from scratch — Home, Products, Equipment-as-a-Service, About, Contact, and Blog — with a custom brand system.
  • Bundled with Vite and deployed on Vercel with a custom domain, sitemap, and SEO setup.
HTMLCSSJavaScriptViteVercelSEOWeb Design

Personal AI Assistant: Email-to-Calendar Automation & Mobile App

Self-Project View in Work Gallery ↗

Built a fully autonomous smart agent using Google Apps Script and the Mistral AI API to solve the problem of missing important university seminars and personal events buried in emails. The backend script scans my inbox, uses an LLM to extract actionable event details (times, links, attendees), and logs them into a relational database. To easily triage these events, I built a zero-code mobile frontend using Google AppSheet, complete with swipe-to-approve gestures that automatically synchronize with my Google Calendar.

Mistral AIGoogle Apps ScriptAppSheetAutomation

Automatic Temperature-Controlled Fan System

In this project we built an automatic temperature-controlled fan system using analog circuit to improve heat management efficiency. Using a BC107 transistor, a thermistor, and a custom 3D-printed housing, the system automatically activates a DC fan when temperatures exceed a specific threshold. Designed to be functional, not just a demo, it often comes in handy for my labmates 😅.

Portfolio Insight — Personal Investment Tracker

Self-Project View on GitHub ↗

My investing journey started in 2021, applying for IPOs in the Nepali market, and in 2023 I moved into the secondary market to pick companies directly — teaching myself fundamental analysis to do it. I invest for the long term and believe in the power of compounding, which keeps me calm through short-term swings and buying quality whenever I can.

  • Found that Nepal has no good tool to track what you've actually invested, your real returns, the bonus shares you've received, or your portfolio's financial health.
  • Built Portfolio Insight for myself to solve exactly that.
  • Added performance and sector-allocation dashboards to see portfolio health at a glance.
ReactTypeScriptViteTailwind CSSshadcn/uiRecharts

Quantum Double Shield Protocol for Secure Communication

Hackathon Visit ↗

Today's internet encryption (like RSA) depends on the fact that no classical computer can efficiently factorize large numbers. But Shor's Algorithm running on a quantum computer can. This means all our current encrypted communications — banking, messaging, defense — are vulnerable once a sufficiently powerful quantum machine arrives. Our team set out to build a communication protocol that is secure even against quantum attacks.

We built the Quantum Double Shield Protocol: a two-layer security system combining the BB84 Quantum Key Distribution (QKD) protocol with a Quantum Random Number Generator (QRNG) for adaptive authentication. BB84 uses the laws of quantum mechanics — any eavesdropper physically disturbs the quantum state and can be detected. We simulated the entire protocol using Qiskit, demonstrating secure key exchange and anomaly detection.

Won 3rd place at the Amaravati Quantum Valley Hackathon. This project was directly inspired by my study of Shor's Algorithm and the urgency of transitioning to quantum-resistant cryptography.

QiskitBB84 ProtocolQRNGQuantum Key DistributionQuantum Cryptography

Built Peer-to-Peer Learning Platform

Self-Project Visit ↗

A peer-to-peer mentoring and academic collaboration platform for students. Self-initiated project to make connecting with peers, finding hackathon partner, or learning partner, or like minded students within SRMAP more accessible.

Post-Quantum Cryptography: From RSA to Shor's Algorithm

Academic-Project Read Full Paper ↗

Every message we send online — a WhatsApp text, a bank transaction, an email — is protected by encryption. Most of this encryption relies on one simple fact: it's extremely hard for a classical computer to factorize a large number into its prime factors. For example, multiplying 3 × 5 = 15 is trivial, but given just 15, figuring out it came from 3 and 5 is much harder when the numbers are hundreds of digits long. RSA, the backbone of modern internet security, is built entirely on this difficulty.

In this project, I studied how Shor's Algorithm completely breaks this assumption.

I also studied Post-Quantum Cryptography (PQC) — the active race to build encryption systems that even a quantum computer can't crack.

Quantum ComputingRSAShor's AlgorithmPost-Quantum CryptographyHash FunctionsNumber Theory

Built Nepali Village Calculator

Self-Project Visit ↗

"I found no app or website to help my mom calculate interest the way it's done in Nepali villages — she would often have to call a neighbour just to figure it out. So I built one myself: a free compound interest calculator using Bikram Sambat (BS) dates, designed specifically for village loans and personal lending in Nepal. It's currently the #1 search result on Google for "village calculator nepal"!

"Losing is a habit. So is winning." — The Compound Effect, Darren Hardy
★ Featured · Nationally Selective Program

WISER Quantum Algorithm & Hands-on Training

The Washington Institute for STEM, Entrepreneurship & Research · with Amaravati Quantum Valley & Qubitech ·

A two-phase national quantum-computing program. I advanced through every stage of selection — from a cohort of 65,000+ learners down to the final 100 chosen for a full scholarship.

  1. 65,000+ Learners enrolled · Phase 1
  2. Top 3,000 Selected for Phase 2
  3. In-person exam Proctored physical test
  4. Top 100 100% scholarship · Summer Program

Show credential ↗

"Everything you need is already within you." — Hermann Hesse, Siddhartha

I would like to describe myself as a leader/motivator and a long-term investor who believes in quantum technology, green energy and EV vehicles.I love building things with my own hands, I like reading different books related to business and human-centric approaches. I read books to give myself a different view to look at the world (Inner Engineering, Siddhartha, The Alchemist, The Untethered Soul, The Peaceful Warrior...).

I grew up in a small village in Nepal. As a quiet kid, my mind was always racing with ideas—trying to extract soap back out of foam, attempting to build hot air balloons from plastic bags I’d seen in movies, and tinkering with electronics (which usually just resulted in me getting shocked). But that raw curiosity led me to physics, and physics led me to labs, instruments, and a deep belief that science should serve people.

I am currently a fourth-year undergraduate Physics student at SRM University, Andhra Pradesh, on an 80% merit scholarship. My work sits at the intersection of experimental solid-state physics and quantum technology. By degree I am a physicist, because it helps me to think from fundamentals. Physics knowledge helps me to think and question anything — philosophy, business, investment — in depth. I have a goal of making human life easier via technology accessible to the general public.

I am a tech guy who loves technology, and someone who likes to spend time in solitude to think and talk to nature. My aim is to make my country Nepal equipped with tech.

Featured In: SRM University Interview