Quantum capacity

Quantum capacity is like the amount of water a bucket can hold. But instead of water, it measures how much information can be sent using quantum mechanics.

In the world of quantum mechanics, tiny particles like electrons and photons can be used to send information. Just like how you can use your voice to talk to someone far away, scientists use these tiny particles to send messages between computers separated by huge distances.

Now, imagine you have two buckets. One bucket is big and can hold a lot of water, while the other is small and can only hold a little bit of water. In the same way, some quantum channels can carry a lot of information, while others can only carry a little bit.

The quantum capacity measures how much information can be sent through a quantum channel. Just like how you can only fill the small bucket up to a certain level, there is a limit to how much information can be sent through a quantum channel.

Scientists are always trying to find ways to increase the quantum capacity, just like how you might try to find a bigger bucket to hold more water. This is important because as we rely more and more on technology for communication, we need to be able to send more and more information through quantum channels.