ELI5: Explain Like I'm 5

Quantum Markov chain

Okay kiddo, let's start by talking about a few things. First, let's talk about what a chain is.

You know how sometimes you play with beads and string them all together to make a necklace? Well, imagine if you only had a few different colors of beads to choose from and every time you added a bead to the necklace, you had to make a choice based on the colors of the beads you had already used. It would be like following a rule, right? That's kind of what a chain is, but with numbers and rules that tell you what number comes next.

Now let's talk about Quantum. This is a word that has to do with tiny tiny tiny particles called atoms. Scientists have discovered that some things act differently on this tiny scale than they do when we look at them in our everyday world. And these tiny things can be in more than one place at the same time or have more than one state at the same time. It's kind of like a coin can be heads or tails, but on this tiny scale, it can be both at the same time until we look at it and force it to pick one.

So, a Quantum Markov Chain is a fancy math concept that uses these tiny particles and their weird rules to understand how things change over time. It's like if you were watching a plant grow and you wanted to know how fast it would grow or how tall it would get. You could make a chain that tells you how much it grows each day based on how much it grew the day before.

But with a Quantum Markov Chain, we are using the same idea but with tiny tiny tiny particles that we can't even see! We use these chains to help us understand how these particles might change over time or interact with each other.

Does that make sense, kiddo?