Posts

Do Quantum Circuits Look Alien to You?

September 19

When you first see a quantum circuit, it can feel a bit like staring at an alien language. Strange wires run across the page. Boxes with cryptic symbols sit on top. And the whole thing seems detached from the way we normally think about software. But here’s the twist: quantum circuits aren't alien at all. They're just the way we use to describe quantum computations. And once you know the building blocks, you’ll see they’re not only familiar, they’re surprisingly intuitive.

PyQML's unique teaching style builds on clear descriptions, easy-to-understand examples, a thrilling storyline, and a touch of (sometimes dark) humor.

What Does The CNOT Operator Do?

October 7, 2025

The CNOT operator does not create a cause-effect relationship. It does not even have a directed effect. It's only a simple swap of amplitudes. But one that produces Boolean logic, phase kickback, or entanglement, depending on how you look at it.

The Quantum Superposition Explained Conceptually

October 24, 2025

Don't waste your time with incomprehensible descriptions of the quantum superposition. If you only use quantum systems as a tool, you can safely skip the math. All you need to learn is how to turn the quantum knobs and handles to produce a quantum state vector that represents the problem at hand we aim to solve.

Have You Seen The Devilish Qiskit Squirrel Sabotaging You

October 22, 2025

Qiskit has long held a central position in quantum computing education. But…

You Don't Need To Be A Mathematician To Use A Quantum Computer

March 28, 2025

When you start your quantum computing journey, you will inevitably be confronted with a lot of math. It is intimidating. Some authors throw mathematical formulae at you without bothering to explain them.

You Don't Need To Be A Physicist Or Mathematician To Learn Quantum Computing

October 28, 2025

My talk at the RGUT Srikakulam Qiskit Fall Fest'25

Parameterized Quantum Circuit

September 10, 2025

Parameterized quantum circuits let us embed classical data into quantum states, tune them with adjustable gates, and read out predictions through measurement. The real question is whether these simple building blocks can be scaled into architectures that deliver genuine quantum advantage.

In Qiskit, there's no getting around quantum circuits. They are the central and most powerful element you will be working with. Master quantum circuits in Qiskit, and you will master everything.

How To Navigate The Quantum Machine Learning Landscape

October 20, 2025

You studied mathematics, mastered the postulates, and programmed every standard quantum circuit. Yet nothing works as expected. The problem isn't with you. It's with the map you're following. Quantum machine learning cannot be learned linearly. It must be rotated.

Quantum Circuit

September 17, 2025

Quantum circuits are more than just abstract math. They bridge theory and hardware by turning dense unitary matrices into structured recipes that real devices can execute. From the simplest Bell state to complex algorithms, circuits provide an essential layer of abstraction that makes quantum computation both understandable and practical.

Quantum Data Encoding

September 23, 2025

From basis states to amplitude, angle, and block encodings, each approach solves a different bottleneck, but none is universally applicable. If you've ever wondered, "How do I actually get data into qubits?", then this is your starting point.

Struggling With The Quantum Fourier Transform?

September 25, 2025

Math tells you it's a unitary with complex exponentials. Physics says it's a basis change into momentum space. Neither really helps. The Quantum Fourier Transform encodes numbers as periodic phase patterns. And that periodicity is exactly what quantum algorithms exploit.

Quantum Probabilistic Modelling

September 9, 2025

At the heart of modern science and machine learning lies a seemingly simple process: sampling from a probability distribution. Whether you're running a Bayesian model, training a generative network, or simulating molecules, the quality of your samples determines the quality of your predictions.

Spectral Quantum Algorithms for Eigenvalue Estimation and Transformation

September 08, 2025

Eigenvalues determine everything from how a quantum system evolves to how a kernel method in quantum machine learning defines similarity between data points. Without a way to compute or transform them efficiently, the promise of quantum speedups in machine learning collapses into impractical theory.

The Fascinating But Hidden Simplicity Of Quantum Operations

October 14, 2025

Quantum computing is difficult enough. To make matters worse, it comes with all these letters that stand for mysterious transformations. Instead of explanations, you only get matrices that seem alien to you.

Are You Among The Chosen To Be Let Into The Secrets Of Quantum Computing?

October 22, 2025

Be prepared. The sorcerer intends to mold you into the quantum computing expert he deems worthy

The Best Explanation Of Quantum Systems To Start With

October 22, 2025

Understand quantum systems from a perspective that helps you use them as a tool to solve practical problems. "Otherwise you could be smashed against the overhanging rocks, against which the deep blue waves of the Amphitrite beat with terrific fury."

You will not learn quantum computing in conventional quantum computing textbooks. But it's not because you're not intelligent enough.

Variational Quantum Machine Learning Algorithms

September 15, 2025

Variational quantum machine learning algorithms are a hybrid approach in which a parameterized quantum circuit is tuned by a classical optimizer to approximate solutions to complex problems.

The Sinister Villains Of Quantum Computing Education

October 22, 2025

The Underworld of Quantum Machine Learning Education is crowded with sinister villains. They emerge inconspicuously. But before you know it, they turn your quantum machine learning journey into a nightmare.

What Is A Qubit

September 30, 2025

Most explanations of qubits are based on misleading analogies that obscure more than they reveal. Let's clear up this confusion and show how qubits really work by comparing them to classical probability and then expanding on amplitudes, entanglement, and interference. If you're looking for a clear introduction to quantum computing without the usual myths, start here.

What the CNOT Operator Really is

October 02, 2025

You've been misled about the CNOT gate. Open almost any textbook and you'll read: “If the control qubit is |1⟩, flip the target.” But CNOT is not a cause-and-effect gate. Let's take a look at what it is instead.

Looking Inside A Qubit

October 8, 2025

A qubit is not a classical bit that can be both 0 and 1! A qubit doesn't store values at all; it defines probabilities.