About
About Quantum Wallah
Quantum Wallah is a free online learning platform that teaches quantum computing to complete beginners through 36 short, diagram-led lessons across five tracks. No account, and no physics, maths, or coding background required.
What Quantum Wallah is
Quantum Wallah is a free quantum computing education platform published at quantumwallah.com. It teaches quantum computing from zero through 36 short lessons organised into five tracks, each lesson built around a diagram and written to be read in about six minutes. The material is in English, is open to anyone, and requires no payment, no subscription, and no account.
The project began in 2025 with a straightforward premise: quantum computing is explained either in analogies that are too loose to be useful, or in linear algebra that assumes a physics degree. Quantum Wallah aims at the space in between, explaining the real mechanism using pictures first, and offering the mathematics as an optional track for anyone who wants the symbols as well as the ideas.
What it teaches
- Quantum Computing Fundamentals (Beginner, 8 lessons) — What a qubit is, what happens when you look at one, and why any of it lets you compute faster.
- Math Behind the Qubit (Essential, 8 lessons) — The small bit of school math behind the pictures. Entirely optional.
- Quantum Algorithms (Intermediate, 8 lessons) — Grover, Shor, and the variational methods people actually run today, including where each one stops helping.
- Quantum Cryptography (Intermediate, 6 lessons) — What quantum computers break, what they leave alone, and what is already replacing it.
- Quantum Machine Learning (Advanced, 6 lessons) — Where quantum computing meets AI, and how to tell a real result from a press release.
Alongside the lessons, the Feynman Lab is an in-browser quantum circuit builder. You drag gates onto a wire, watch the state and measurement probabilities update as you go, and export the finished circuit as Qiskit or Cirq code to run on real quantum hardware.
Editorial stance
Lessons state plainly what quantum computers can and cannot do. Where a claim is contested or unproven, the lesson says so rather than rounding up to a cleaner story. Named results are attributed and dated. There is a lesson specifically on the limits — NP-complete problems, data-loading costs, and error-correction overhead — because a beginner course that omits them produces confident misunderstandings.
Who it is for
Students, software engineers, and curious beginners who want to understand quantum computing properly rather than through analogies. The project started with the goal of making India quantum ready, and that remains its focus, but the material assumes no particular location or curriculum.
Not affiliated with Physics Wallah
Quantum Wallah is an independent quantum computing education platform. It is not affiliated with, owned by, or a product of Physics Wallah (PW), and the shared "Wallah" suffix is coincidental. Quantum Wallah publishes only quantum computing material, and its only website is quantumwallah.com. Any course, app, or account presented elsewhere as “Quantum Wallah” is not connected to this project.
Official channels
The only channels operated by Quantum Wallah are this website and the profiles listed below.
- Website: quantumwallah.com
- YouTube: youtube.com/@quantum-wallah
- LinkedIn: linkedin.com/company/quantum-wallah
To start learning, open the roadmap or go straight to the first lesson.
The Feynman Lab
Stop reading. Start building.
Drag gates onto a wire, watch the amplitudes move, and measure the result. Then export the whole thing as Qiskit or Cirq code and run it on real quantum hardware.
- Build circuits by dragging gates, no syntax to learn
- See the state and measurement odds update as you go
- Export to Qiskit or Cirq and run it for real
- Outcomes that occur
- Outcomes with zero amplitude