Quantum Computing

ELI5 - How does a quantum computer work and why are they superior to our current computers?

Quantum computers use qubits, which, unlike classical bits (only 0 or 1), can exist in superpositions of 0 and 1, allowing them to process multiple possibilities simultaneously. For example, three qubits can represent all eight possible combinations of three bits at once, vastly increasing computational power for certain tasks. This capability enables quantum computers to solve problems like factoring large numbers (Shor's algorithm) or searching databases (Grover's algorithm) much more efficiently than classical computers. However, their superiority is limited to specific problem types, not universal tasks. Building quantum computers is challenging due to issues like qubit decoherence and the difficulty of performing calculations without collapsing the quantum state, and as a result, practical applications of quantum computing are still in development.

By Alex 4 months ago

Quantum Computing

ELI5 - How does a quantum computer work and why are they superior to our current computers?

Conventional computers operate using binary switches that are either on or off, forming the basis for logic gates like AND, OR, and XOR, which are combined to perform various tasks. In contrast, quantum computers use qubits, which act like adjustable switches that can be in a state of 0%, 100%, or anywhere in between, allowing for a range of possibilities simultaneously. Quantum logic gates are complex, but they exploit the principles of quantum mechanics to narrow down solutions to specific problems more efficiently. This ability allows quantum computers to excel at tasks like database searches and particle simulations, completing them much faster than conventional computers.

By drollparadox7655 4 months ago