Quantum Computing

An introduction to Dirac notation

A practical introduction to Dirac notation for understanding qubits, quantum states, measurements, and the mathematical foundation of quantum algorithms.

15 Essential Quantum Computing Concepts Every Developer Should Know

A clear introduction to 15 essential quantum computing concepts every developer should understand before getting started with programming.

Complex numbers are at the foundation of quantum computing

An introduction to complex numbers, Euler's formula and quantum phase to understand how quantum algorithms work.

What Is Quantum Annealing?

An introduction to quantum annealing for developers: how it turns optimization problems into energy landscapes and the role of QUBO and Ising models.

Phase kickback: the hidden mechanism behind many quantum algorithms

A visual and mathematical introduction to phase kickback, the mechanism that turns quantum phases into useful information for many algorithms.

Your First Quantum Application

Build your first quantum application with Qiskit: a random number generator for learning about superposition, measurement, and real execution. A practical introduction to Qiskit through a small quantum random number generator. We will build the circuit, run it first on a simulator, and see how to send it to an IBM quantum computer.

Quantum Entanglement Explained to Programmers

Understand quantum entanglement through Bell states, circuits and measurements, and discover why it is an essential resource of quantum computing.

What a Quantum Transpiler Really Does

An analysis of the process that turns a logical circuit into instructions executable by a specific quantum device: gate decomposition, qubit mapping, routing, SWAP insertion, optimization and scheduling.

Superposition Does Not Mean Trying All Solutions at Once

Superposition lets us represent amplitudes associated with different states, but a measurement does not hand us all of those states. The key to quantum algorithms is manipulating amplitudes through interference to favor useful results.

Deutsch-Jozsa: What Surprised Me When I Understood One of the First Quantum Algorithms

Deutsch-Jozsa shows how oracles and quantum interference reduce queries, and what its separation from classical computation really means.

From Bit to Qubit: The Shift in Mental Models Software Engineers Need

An introduction to qubits for developers: states, amplitudes, phase, measurement, and the Bloch sphere—and a different way to think about programming.

Software Quantum Engineering

A reflection on quantum computing, its disruptive potential, the training it requires, and the role of software in the next major technological revolution.