Quantum Core

Quantum Core — Build Real Quantum Circuits in Your Browser

You can read about superposition for hours and still struggle to explain what a qubit actually does. Quantum computing makes more sense when you write the circuit, watch the state vector move, and see entanglement collapse in real time — not when you copy someone else's notebook. Quantum Core is an 18-hour, advanced-level lab that runs entirely in your browser. No local Python install, no conda environment, no IBM account required to get started. Write and simulate a quantum circuit today, not after configuring a local Python environment.

What you'll be able to do

By the end of Quantum Core you will be able to:

• Write, run and debug Qiskit circuits from scratch
• Read and interpret live state vectors as your gates execute
• Set up and verify Bell states — the foundation of most entanglement-based protocols
• Walk through quantum teleportation step by step and explain each measurement
• Model a repeater chain and observe how decoherence degrades fidelity over distance
• Export a working circuit to IBM Quantum and submit it to real hardware
• Answer quantum-computing interview questions with working code, not slide-deck talking points

How it works

Step 1 — Open the lab and start building immediately

There is no setup phase. The browser environment loads Qiskit, the Aer simulator and a circuit builder with a live state-vector display. You write code or drag gates, hit run, and see the output. The AI instructor watches what you type and speaks to you — ask it why a CNOT on an unentangled pair produces a product state, and it will show you in the circuit, not in a pop-up FAQ.

Step 2 — Work through structured problem sets with real-time correction

Each section ends with a graduate-grade problem set. The AI instructor grades your circuit by behaviour, not by whether your variable names match a solution file. If your Bell-state preparation produces the wrong measurement distribution, the instructor flags it the moment you run the cell, tells you which gate is wrong, and asks you a follow-up question to make sure you understand why — not just that you fixed it.

Step 3 — Earn your certificate by performance

Jade Labs certifies by demonstrated ability. You pass the Bell-state experiment by producing the correct statistics. You pass the repeater-chain sandbox by hitting a fidelity target under a noise model. There is no multiple-choice final. Your certificate is a record of circuits that ran correctly.

What's inside

• Circuit builder with live state vectors — gates update the statevector display in real time so you can see superposition and entanglement as they form, not after the fact
• Aer simulator and IBM-ready export — run thousands of shots locally with noise models, then export the same circuit to IBM Quantum with one command
• Entanglement and teleportation labs — build all four Bell states, verify them with measurement statistics, then use them as a channel for teleporting a single-qubit state
• Repeater-chain sandbox — chain up to eight nodes, dial in decoherence and gate error rates, and watch how entanglement swapping and purification change end-to-end fidelity
• Graduate-grade problem sets — 18 hours of material calibrated for people who are serious about quantum computing, not people who want a certificate of completion for watching videos

Who it's for

• Physics and CS students who need a working environment for Bell-state experiments without a university cluster
• Software engineers preparing for quantum-computing interviews at companies building on Qiskit or similar stacks — you will have working code, not memorised definitions
• Lecturers and teaching assistants who want a live demonstration environment that does not depend on a functioning projector Python install
• Technically curious builders who have read the introductions and want to know what actually happens when you chain quantum repeaters across a lossy channel

The lab is marked Advanced. It assumes comfort with Python and linear algebra at the level of matrix multiplication and complex numbers. It does not assume prior quantum mechanics.

How it compares

The IBM Qiskit textbook is genuinely the best place to look up how a specific gate works. Coursera and edX carry courses from respected institutions with real academic weight. Quantum Core is not a reference and it is not a credential from a university. What it does is put you inside a working environment immediately, correct you when your circuit is wrong, and certify you on what the circuit actually does.

Frequently asked questions

Do I need any prior quantum computing knowledge to learn quantum computing with this lab?

The lab is Advanced level. It does not require quantum mechanics from a physics degree, but it does assume you can read Python and are comfortable with matrix multiplication and complex numbers. If you have never seen a qubit described mathematically, spend an hour with the IBM Qiskit textbook introduction first.

Is this a proper Qiskit tutorial or just a conceptual overview?

You write real Qiskit code throughout. By the end you will have built circuits using Hadamard, CNOT, phase and swap gates, run them through the Aer simulator with and without noise models, and exported at least one circuit to IBM Quantum.

Can I take this as a quantum computing course for university credit?

Jade Labs certificates are performance-based but are not affiliated with a university and do not carry academic credit. If institutional credit matters to you, an edX or Coursera course from a partner university is the more appropriate choice.

What does entanglement explained actually look like inside the lab?

You build a Bell state from scratch, measure both qubits across 1,024 shots, and inspect the correlation in the results. The AI instructor walks you through why separable states cannot produce that distribution. You also break entanglement deliberately — by adding a gate in the wrong place — and see the statistics change.

How does the bell state experiment get graded?

The instructor runs your circuit and checks the measurement distribution against the expected statistics for the Bell state you were asked to produce. If the distribution is wrong, it tells you which part of the preparation is at fault and asks you to explain what the CNOT is doing before you fix it.

Does the quantum repeater simulation use a real noise model?

Yes. The repeater-chain sandbox uses Aer's configurable noise models — you set gate error rates, T1 and T2 times, and channel loss. It does not model a specific physical hardware platform, but the fidelity degradation you see is produced by the same simulator used for IBM hardware prototyping.

$39 one-time — or access every Jade Labs lab for $19/month.