#blochsphere — Public Fediverse posts

Updated: I added the aha-chapter that I was missing.

"Quantum computers try all possibilities in parallel" is the popular line — and it's dangerously misleading. A measurement collapses everything to one random answer, so "parallel" on its own is useless.

The actual move: a quantum algorithm is ONE global linear transformation on a 2^n-amplitude vector, designed so wrong answers destructively cancel and the right one amplifies. Classical searches. Quantum shapes.

Walkthrough with a Grover-style bar chart in four snapshots, plus the full pipeline: superconducting oscillator → Josephson junction → Bell state → amplitude amplification → Shor / Grover / simulation.

🔗 https://ki-mathias.de/en/quantum-computing.html
🎥 https://youtu.be/iMaqNfA0Gs0 (9:14, HD)
📦 Qiskit notebooks: https://github.com/pmmathias/quantum-computing

#quantumcomputing #qiskit #qubit #interference #grover #blochsphere #physics #education

Updated: I added the aha-chapter that I was missing.

"Quantum computers try all possibilities in parallel" is the popular line — and it's dangerously misleading. A measurement collapses everything to one random answer, so "parallel" on its own is useless.

The actual move: a quantum algorithm is ONE global linear transformation on a 2^n-amplitude vector, designed so wrong answers destructively cancel and the right one amplifies. Classical searches. Quantum shapes.

Walkthrough with a Grover-style bar chart in four snapshots, plus the full pipeline: superconducting oscillator → Josephson junction → Bell state → amplitude amplification → Shor / Grover / simulation.

🔗 https://ki-mathias.de/en/quantum-computing.html
🎥 https://youtu.be/iMaqNfA0Gs0 (9:14, HD)
📦 Qiskit notebooks: https://github.com/pmmathias/quantum-computing

#quantumcomputing #qiskit #qubit #interference #grover #blochsphere #physics #education

Updated: I added the aha-chapter that I was missing.

"Quantum computers try all possibilities in parallel" is the popular line — and it's dangerously misleading. A measurement collapses everything to one random answer, so "parallel" on its own is useless.

The actual move: a quantum algorithm is ONE global linear transformation on a 2^n-amplitude vector, designed so wrong answers destructively cancel and the right one amplifies. Classical searches. Quantum shapes.

Walkthrough with a Grover-style bar chart in four snapshots, plus the full pipeline: superconducting oscillator → Josephson junction → Bell state → amplitude amplification → Shor / Grover / simulation.

🔗 https://ki-mathias.de/en/quantum-computing.html
🎥 https://youtu.be/iMaqNfA0Gs0 (9:14, HD)
📦 Qiskit notebooks: https://github.com/pmmathias/quantum-computing

#quantumcomputing #qiskit #qubit #interference #grover #blochsphere #physics #education

Updated: I added the aha-chapter that I was missing.

"Quantum computers try all possibilities in parallel" is the popular line — and it's dangerously misleading. A measurement collapses everything to one random answer, so "parallel" on its own is useless.

The actual move: a quantum algorithm is ONE global linear transformation on a 2^n-amplitude vector, designed so wrong answers destructively cancel and the right one amplifies. Classical searches. Quantum shapes.

Walkthrough with a Grover-style bar chart in four snapshots, plus the full pipeline: superconducting oscillator → Josephson junction → Bell state → amplitude amplification → Shor / Grover / simulation.

🔗 https://ki-mathias.de/en/quantum-computing.html
🎥 https://youtu.be/iMaqNfA0Gs0 (9:14, HD)
📦 Qiskit notebooks: https://github.com/pmmathias/quantum-computing

#quantumcomputing #qiskit #qubit #interference #grover #blochsphere #physics #education

Updated: I added the aha-chapter that I was missing.

"Quantum computers try all possibilities in parallel" is the popular line — and it's dangerously misleading. A measurement collapses everything to one random answer, so "parallel" on its own is useless.

The actual move: a quantum algorithm is ONE global linear transformation on a 2^n-amplitude vector, designed so wrong answers destructively cancel and the right one amplifies. Classical searches. Quantum shapes.

Walkthrough with a Grover-style bar chart in four snapshots, plus the full pipeline: superconducting oscillator → Josephson junction → Bell state → amplitude amplification → Shor / Grover / simulation.

🔗 https://ki-mathias.de/en/quantum-computing.html
🎥 https://youtu.be/iMaqNfA0Gs0 (9:14, HD)
📦 Qiskit notebooks: https://github.com/pmmathias/quantum-computing

#quantumcomputing #qiskit #qubit #interference #grover #blochsphere #physics #education

L'informatique quantique, basée sur la contre-intuitive mécanique quantique, diffère profondément de l'informatique classique.

Tania Belabbas, de l'Institut quantique - Université de Sherbrooke, fait appel aux mathématiques pour nous expliquer le fameux qubit.

https://accromath.uqam.ca/2025/10/de-la-science-fiction-a-linformatique-les-mathematiques-pour-expliquer-les-qubits/

#QuantumComputing #qubit #BlochSphere #SciComm

L'informatique quantique diffère profondément de l'informatique classique. Tania Belabbas de l'Institut quantique - Université de Sherbrooke fait appel aux mathématiques pour nous expliquer le fameux qubit. accromath.uqam.ca/2025/10/de-l... #QuantumComputing #qubit #BlochSphere #SciComm

Seems like you cannot just modelize an N Qbit quantum system with an array of N Qbit... Entanglement makes things much more complicated.

I have to redesign my quantum playground from scratch to handle several qbits 🙁

Too bad, I just added add/remove QGate buttons.

If you yhink you understand quantum mechanics, you have probably missed something.

#quantum #quantumcomputing #qbit #BlochSphere

My #Blochsphere slowly start to be something. I can now represent #Quantum gate effect on a #Qbit.

PauliZ is easy to understand, PauliX and PauliY , Mmm..... Ok, but Hadamard gate is more tricky.

You can play with here: https://kissyagni.com/the-bloch-sphere/index.html

Code available here: https://codeberg.org/KissYagni/KissYagni_blog/src/branch/master/content/the-bloch-sphere

#threejs #glsl #raycasting #quantum_computing

Small ugly update of my #BlochSphere viewer. I now display cartesian representation of #qbit probability amplitude. It basically gives the probability of having |0⟩ or |1⟩ when measuring the qbit. (strickly speaking, they are the square root of probability):

#quantumcomputing for dummies

I continue my #BlochSphere. X, Y, Z, axes 2 slider for Theta/Phi and the arrow representing the #QBit.

I don't like triangles btw, so I'm doing everything in #raytracing with #threejs #glsl #shader, CSG and ray/primitive intersection.

Yep, there is only 6 triangles here 😇