QVote

Inspiration

Trust is the foundation of any voting system. Inaccurate or compromised results can undermine entire processes. For this hackathon, I set out to explore how quantum computing can enhance voting security, transparency, and reliability.

What it does

Generates truly random one-time voter tokens using quantum randomness.
Detects duplicate or fraudulent votes using a simulated Grover’s algorithm search.
Strengthens authentication with quantum-generated salts for password hashing.

How we built it

The architecture combines:

Frontend (Next.js) – For voter and admin interaction.
Backend (ASP.NET C#) – Handles voting logic and API endpoints.
Quantum Layer (Q#) – Provides:
- Quantum token generation for voter access.
- Grover’s algorithm simulation for duplicate detection.
- Quantum-generated salt for password hashing.
Database (MSSQL) – Stores organization data, voter lists, and results.

Challenges we ran into

Learning Q# in a short time.
Simulating large-scale quantum search without QRAM which we later decided to simulate a search using Grover's algorithm
Debugging C# ↔ Q# data conversion.
The biggest challenge was understanding q# algorithms and integrating into c# application

Accomplishments that we're proud of

Successfully integrated Q# quantum operations with an ASP.NET backend and Next.js frontend.
Demonstrated three distinct, functional applications of quantum computing in one system.
Built a full-stack working prototype in a short hackathon timeframe.
Learned and applied Q# from scratch while delivering real functionality.

What we learned

Through this project, We learned:

How to write Q# operations and integrate them with a C# backend.
How quantum randomness outperforms classical PRNGs in cryptography.
How to simulate Grover’s algorithm, which runs in time complexity
[ O(\sqrt{N}) ] compared to classical (O(N)) search.
The design of hybrid classical–quantum workflows ready for future quantum hardware.

What's next for QVote

Implement post-quantum cryptography for all vote data storage and transmission.
Scale to millions of voters with optimized quantum search algorithms and QRAM integration.