What Is a Qubit? Types and How They Are Made
What a qubit is, how it differs from a bit, the types of physical qubits, how they are measured and why scaling them up is hard.
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Quantum Hardware & Qubits
Superconducting circuits, trapped ions, photonics, silicon spins and neutral atoms: the physical machines behind the qubit count, and what limits them.
69 articles
Quantum Numbers, Orbitals and Electron Configuration
The four quantum numbers, orbital shapes and the rules of electron configuration: the Aufbau principle, Pauli exclusion and Hund’s rule.
Quantum Processing Software: The Current Stack
What quantum software does between the user and the hardware, how quantum and classical processing compare, and which industries use it.
Quantum Dots: Semiconductor Nanocrystals Explained
Quantum dots are semiconductor nanocrystals whose size sets their color. Their properties, synthesis, core-shell designs and uses in displays and medicine.
Does a Quantum Computer Need an Operating System?
Why quantum computers need a dedicated operating layer, and what a quantum OS handles: resource management, hardware control and algorithm execution.
Quantum Programming Languages: Qiskit, Cirq and Q#
How quantum programming differs from classical code, and how languages and SDKs such as Qiskit, Cirq and Q# describe circuits, gates and qubits.
Quantum Chip Makers: Who Builds the Hardware
Who builds quantum chips: IBM, Google, Intel, Rigetti, D-Wave, IonQ, Xanadu, PsiQuantum and others, and which qubit technology each one uses.
The First Quantum Computer: Who Built It and When
Who built the first quantum computers and when, how early NMR and later machines worked, and the milestones from Shor’s algorithm to quantum volume.
Quantum Dot Qubits: Promise and Problems
Quantum dot qubits store information in single electron spins in semiconductors. Their architecture, fabrication, coherence, gates and challenges.
Quantum Gates Explained: The Basic Operations
What quantum gates are and how they act on qubits: single-qubit rotations, Hadamard, CNOT, Toffoli, unitary matrices and the quantum Fourier transform.
Building Blocks of Quantum Computing Hardware
The building blocks of quantum hardware: qubits, gates, circuits, registers, interconnects, processor architectures and error correction.
Qubit Scalability: Why Adding Qubits Is So Hard
Why scaling from tens to millions of qubits is hard: coherence, crosstalk, connectivity, calibration, control wiring, measurement and error rates.
