Building a Quantum Random Number Generator with Qiskit
Table of Contents Why Build a Quantum RNG? Prerequisites Part 1: The Simplest QRNG (1 Qubit) Part 2: Multi-Qubit QRNG (8 Bits per Shot) Part 3: Entangled QRNG (Our Approach) Part 4: Running on Real Quantum Hardware Part 5: Converting Measurements to Usable Data Part 6: Verifying Randomness Quality Complete Code Why Build a Quantum Random Number Generator? Every random number your computer has ever produced is fake. That sounds dramatic, but it is technically true. Classical computers are deterministic machines. They cannot produce true randomness — only pseudorandomness , sequences that look random but are completely determined by an initial seed. Give random.seed(42) to Python and it will produce the same "random" numbers every time, on every machine, forever. For most applications, pseudorandomness is fine. But for cryptography, scientific simulation, and — as we discovered — generative art, there are good reasons to want the real thing. A quantum random n...