Technology
How does a quantum computer work?
A quantum computer uses quantum bits (qubits) that can be 0, 1, or both at once thanks to superposition. By harnessing this and entanglement, it can explore many possibilities in parallel, potentially solving certain problems far faster than normal computers.
See it in motion.
Watch a 2-minute animated lesson that shows exactly how a quantum computer works.
Step by step
- 1It uses qubits, which can be 0 and 1 at the same time.
- 2Superposition lets it explore many states at once.
- 3Entanglement links qubits to work together.
- 4It excels at specific problems, not everyday tasks.
Frequently asked questions
- How does a quantum computer work?
- It uses qubits in superposition and entanglement to process many possibilities simultaneously.
- What is a qubit?
- A quantum bit that, unlike a normal bit, can represent 0, 1, or a blend of both at once.
- Will quantum computers replace normal ones?
- No — they're suited to specific problems like simulation and cryptography, not general everyday computing.