Classical Bits vs Qubits: What Actually Changes
Classical bits against qubits: binary states, superposition, entanglement, gates, measurement and where quantum parallelism does and does not help.
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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
How Qubits Make Quantum Computers Different
How qubits differ from bits, why superposition and entanglement matter, the difficulty of building stable qubits and why error correction is needed.
What Is a Qubit? The Unit Behind Quantum Computing
A qubit is the basic unit of quantum information. Its states on the Bloch sphere, physical implementations, fragility and the topological approach.
Quantum Processors: How They Differ From CPUs
How quantum processors differ from CPUs, why they will work alongside classical hardware rather than replace it, and what that means for education.
Qubit vs Bit: The Key Differences Explained
A bit holds 0 or 1; a qubit holds a superposition. How the two differ in gates, storage, error behaviour and what that means for computation.
Quantum PC: Will One Ever Sit on Your Desk?
Why quantum computers are unlikely to become desktop PCs: cooling, error rates and cost, and how gate-based machines and annealers are accessed today.
Quantum Dot Technology and What It Is Used For
Quantum dots are semiconductor nanocrystals whose color depends on size. Their uses in displays, solar cells, biological imaging, sensing and medicine.
Can You Build a Quantum Computer at Home?
Photonic, NMR and trapped-ion approaches to building a small quantum computer, what the hardware demands, and what a hobbyist can realistically do.
Quantum Computer Chips: How They Are Built
How quantum processor chips are built: qubits, superposition, entanglement, gates and circuits, and the engineering limits that current hardware faces.
