> For the complete documentation index, see [llms.txt](https://docs.qubixquantum.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.qubixquantum.com/understand/quantum-basics.md). # Quantum Basics #### Bits and Qubits To get quantum, start with a regular computer. Every phone and laptop runs on bits. A bit is just a 0 or a 1, on or off. Everything you see on a screen is millions of those, arranged cleverly. A quantum computer uses qubits instead, and a qubit pulls off two tricks a normal bit can't: * Superposition — a qubit can be 0 and 1 at the same time, right up until you measure it. Picture a coin lying flat on the table (clearly heads or tails) versus a coin spinning in the air (both at once until it lands). The spinning coin is your qubit. * Entanglement — link two qubits and they stay connected no matter what. Measure one and you instantly know the other, like two coins that always land the same way even on opposite sides of the room. It sounds bizarre, and it is. But it's real, and it's exactly where quantum computers get their power. #### True Randomness Here's a strange truth: a normal computer can't actually be random. Ask it for a random number and it just runs a formula that looks random. If you knew where that formula started, you could predict every result. It's a magic trick, not real chance. Quantum is the real deal, and this is the one thing it does better than anything else today. A qubit is genuinely undecided until you measure it, and nobody can predict how it'll land, not even in theory, because nature itself makes the call at the moment of measurement. That matters anywhere the result has to be fair, like a giveaway or a raffle. Quantum randomness can't be faked or guessed. And that's exactly what Qubix is built on. #### AI vs Quantum People throw AI and quantum in the same basket, but they're completely different tools. * AI is brilliant at patterns. It learned from mountains of text to predict what comes next, which is how it understands what you ask. But it runs on a normal computer and doesn't compute anything quantum. * Quantum doesn't know language or pictures. It taps into the weird behavior of qubits to do specific things normal computers struggle with. It's not faster or smarter, just different, and good for a narrow set of problems. So what's quantum actually best at? Today, true randomness, which is what powers Qubix. Down the road, once machines get bigger and steadier, it could simulate molecules for new medicines, crack the encryption we rely on now, and search through enormous sets of possibilities faster than anything we have. All of that needs machines well beyond what exists today. One myth worth killing: quantum isn't going to replace normal computers or AI. For just about everything you do day to day, a regular computer is faster and cheaper. The better way to picture it is teamwork: AI makes quantum easy to use, and quantum hands you the real randomness a normal computer never could. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.qubixquantum.com/understand/quantum-basics.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.