Hi there! This thread makes me so happy. I posted the Quantum Supersampling video and then went on vacation for a week, and while I was out a colleague sent me

Hi there! This thread makes me so happy. I posted the Quantum Supersampling video and then went on vacation for a week, and while I was out a colleague sent me this link. Thanks for your kind words; they made my day. The thoughtful smart discussion going on here is exactly what I was hoping would happen. I'll post answers (as well as I can) to the items here as time permits. Regarding this one: You're exactly right that simulators can handle pretty complex circuits; my sim used in the video, QCEngine [1] will handle up to 28 qubits in a browser for full simulation, or many thousands for the subset of operations known as the "Clifford Group". When I started scaling down things to run them, it was on actual hardware. Most hardware requires several 'physical' qubits to implement each 'logical' qubit. For example, the photonic chip I showed generated 4 entangled qubits, but the program I ran with it just has 2. It's using something called 'Measurement-based QC', whic destroys the working qubits as the program goes on. Anyway, the hardware's getting much better, and I expect to see photonic devices with many qubits in the near future. Strilanc, your Quirk sim is amazing. It's fun and easy to use, and the tooltips on the instructions are awesome. The circle notation made me smile, as that's the way I visualize this stuff, even on graph paper. A while ago I made some side-by-side notes on QCEngine and Liquid, as each is the right tool for a different job. You can see that here [2]. 1: http://qcengine.com http://qcengine.com 2: http://machinelevel.com/qc/bristol/liquid_samples.html http://machinelevel.com/qc/bristol/liquid_samples.html