Quantum computing | How a Qubit Becomes a Sphere (Bloch Sphere Explained)

A qubit is just two complex numbers… so how does it become a point on a sphere? 🤯
In this video, we uncover the geometric magic behind quantum mechanics and derive the Bloch Sphere representation step by step:

Why we can’t directly observe a quantum state
How Pauli matrices reveal measurable quantities
Turning expectation values into a 3D vector
Why x² + y² + z² = 1 defines the Bloch Sphere, the meaning of its axes as computational, superposition, and phase, and how the angles θ and ϕ map quantum states to geometry.
By the end, you’ll see how every qubit lives beautifully on a sphere—and why measurement changes everything.

Видео Quantum computing | How a Qubit Becomes a Sphere (Bloch Sphere Explained) канала Vasu V