Qubit, An Intuition #2 — Inner Product, Outer Product, and Tensor Product in Bra-ket Notation

TL;DR; 
2 qubits inner product, outer product, and tensor product in bra-ket notation, with examples.
Please refer to the previous article (published in July 12 2021), “Qubit, An Intuition #1 — First Baby Steps in Exploring the Quantum World” for a discussion on a single qubit as a computing unit for quantum computation.

For an introductory helicopter view of the overall six articles in the series, please visit this link “Embarking on a Journey to Quantum Computing — Without Physics Degree.”

Quantum Bit

Inner Product, Outer Product, and Tensor Product

Bra-ket notation for two-qubit operations: inner product, outer product, and tensor product.
An example of quantum gates: NOT (flip gate), CNOT (Controlled-NOT), H (Hadamard), and Z (phase flip gate). Quantum gates are used to perform quantum computation in a quantum circuit.

Moving Forward

--

--

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store